Go to My Documents\My Games\GC2TwilightArnor, open the file prefs.ini, and make the following changes:

Change
DisplayWidth=1024
DisplayHeight=768
ColorDepth=32
Fullscreen=1

To
DisplayWidth=(Your desktop width)
DisplayHeight=(Your desktop height)
ColorDepth=32
Fullscreen=0

Then save the file and try to start the game.

Didn't work for me any other tricks? lol

Here is my debug.err

Debug Message:  Version v2.03 Twilight of the Arnor last updated on: Thu Jul 23 11:47:38 2009Debug Message:  Could not open reg key HKEY_LOCAL_MACHINE SOFTWARE\Stardock\ComponentManager\Drengin.net\GalCiv2ULDebug Message:  Could not open reg key HKEY_LOCAL_MACHINE SOFTWARE\Stardock\ComponentManager\Drengin.net\GC2EUDebug Message:  Could not query reg key HKEY_LOCAL_MACHINE SOFTWARE\Stardock\ComponentManager\Drengin.net value named Serial NoDebug Message:  Could not open reg key HKEY_LOCAL_MACHINE Software\Stardock\Drengin.net\GalCiv2ULDebug Message:  Could not open reg key HKEY_LOCAL_MACHINE Software\Stardock\Drengin.net\GC2EUDebug Message:  Could not open reg key HKEY_LOCAL_MACHINE Software\Stardock\Drengin.net\GalCiv2ULDebug Message:  Could not open reg key HKEY_LOCAL_MACHINE Software\Stardock\Drengin.net\GC2EUDebug Message:  Checking DX Version.Debug Message:  *********DXDiag info follows.*********System InfoTime: 5/7/2010, 14:01:07DirectX Version: DirectX 11Machine Name: STEVEROZIER-PCOperating System: Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_gdr.100226-1909)Languages: English (Regional Setting: English)System Manufacturer: Hewlett-PackardSystem Model: HP G71 Notebook PCBIOS: Default System BIOSProcessor: Intel(R) Core(TM)2 Duo CPU     T6600  @ 2.20GHz (2 CPUs), ~2.2GHzPhysical Memory: 4096MB RAMPage File: 1294MB used, 6701MB availableWindows Dir: C:\Windows

Display InfoDisplay device 1:Device Name: \\.\DISPLAY1Card Name: Mobile Intel(R) 4 Series Express Chipset FamilyManufacturer: Intel CorporationChip Type: Mobile Intel(R) 4 Series Express Chipset FamilyDAC Type: InternalKey Device: Enum\PCI\VEN_8086&DEV_2A42&SUBSYS_306B103C&REV_07Display Memory: 1695 MBCurrent Display Mode: 1600 x 900 (32 bit) (60Hz)Monitor Name: Generic PnP MonitorMonitor Max Resolution: Driver Name: igdumd64.dll,igd10umd64.dll,igdumdx32,igd10umd32Driver Version: 8.15.0010.1883Driver Date: 8/27/2009 08:07:12DirectX Acceleration Enabled: Yes 

Sound infoSound device 1:Description: Speakers and Headphones (IDT High Definition Audio CODEC)Default Sound Playback: YesDefault Voice Playback: YesHardware ID: HDAUDIO\FUNC_01&VEN_111D&DEV_7608&SUBSYS_103C306B&REV_1002Manufacturer ID: 1Product ID: 100Driver Name: stwrt64.sysProvider: IDTDriver Version: 6.10.6225.0000Driver Date: 7/21/2009 19:33:32Type: WDMOther Drivers: Acceleration Level: 1Cap Flags: 0Min/Max Sample Rate: 0, 0 

Debug Message:  *********END dxdiag info.*********Debug Message:  Entering WinMainDebug Message:  ******* Starting Game Shell *******Debug Message:  Preparing to change display settings.Debug Message:  Using hardware vertex processingDebug Message:  Using multilsample setting: D3DMULTISAMPLE_NONEDebug Message:  Attempting to create D3DDevice at resolution 1600 x 900, Windowed: 1, Multisample: 0Debug Message:  Game Resolution: 1600 x 900Debug Message:  Running in windowed mode.Debug Message:  HAL (hw vp): Mobile Intel(R) 4 Series Express Chipset FamilyDebug Message:  D3DPRESENT_INTERVAL_IMMEDIATEDebug Message:  Refresh rate: 0Debug Message:  Bit Depth: 32 bit.Debug Message:  *********Checking D3DDevice Caps***********************Debug Message:  A full-color cursor is supported in hardware at high resolution modes.Debug Message:  Border size reported as 6 by 28Debug Message:  RGB in format 6:6:6, Masks reported as ff0000:ff00:ffDebug Message:  Now windowed.Debug Message:  Shell initialization completeDebug Message:  GalCiv2 is activated.Debug Message:  ***** Initializing Game *****Debug Message:  Timer Frequency is 0 20b38bDebug Message:  Could not open reg key HKEY_LOCAL_MACHINE Software\Stardock\Drengin.net\GalCiv2ULDebug Message:  Could not open reg key HKEY_LOCAL_MACHINE Software\Stardock\Drengin.net\GC2EUDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\./Data/ShipCfg/\*.shipcfgDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\./Data/ShipTemplates/\*.shipcfgDebug Message:  Could not open reg key HKEY_LOCAL_MACHINE SOFTWARE\Stardock\ObjectDesktop\DesktopXDebug Message:  Initializing sound card.Debug Message:  initailizing binkDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\Movies\*.bikDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\Movies\techs\*.bikDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\Gfx\Tutorials\*.bikDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\Gfx\*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\Gfx\Race\*.pngDebug Message:  No files found matching mask Movies\techs\*.bikDebug Message:  No files found matching mask Gfx\Tutorials\*.bikDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\Gfx\Movies\*.bikDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\Screens\*.dxpackDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\sfx\*.wavDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\Music\*.mp3Debug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\Event Music\*.mp3Debug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\sfx\*.wavDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\Music\*.mp3Debug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\Event Music\*.mp3Debug Message:  Create setup screens.Debug Message:  Clear galaxy settings.Debug Message:  Clear influence.Debug Message:  Clear up laws.Debug Message:  Clear first time events.Debug Message:  Clear wonders and trade goods.Debug Message:  Clear sector mapper.Debug Message:  Set mouse.Debug Message:  Set update timer.Debug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar./Data/*.xmlDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar./Data/English/*.xmlDebug Message:  No files found matching mask ./Data/*.xmlDebug Message:  Clear data definitions.Debug Message:  Killing ship styles:Debug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar./Data/ShipTemplates/\*.xmlDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar./Data/English/\ShipStyles\*.xmlDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\ShipStyles\*.xmlDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar./Data/\FleetFormations\*.fleetDebug Message:  No files found matching mask ./Data/\FleetFormations\*.fleetDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\Gfx\Planets\C0*.pngDebug Message:  No files found matching mask Gfx\Planets\C0*.pngDebug Message:  No files found matching mask gfx/Terrain/1SideN*.pngDebug Message:  No files found matching mask gfx/Terrain/1SideE*.pngDebug Message:  No files found matching mask gfx/Terrain/1SideS*.pngDebug Message:  No files found matching mask gfx/Terrain/1SideW*.pngDebug Message:  No files found matching mask gfx/Terrain/2SideN*.pngDebug Message:  No files found matching mask gfx/Terrain/2SideE*.pngDebug Message:  No files found matching mask gfx/Terrain/2SideS*.pngDebug Message:  No files found matching mask gfx/Terrain/2SideW*.pngDebug Message:  No files found matching mask gfx/Terrain/3SideN*.pngDebug Message:  No files found matching mask gfx/Terrain/3SideE*.pngDebug Message:  No files found matching mask gfx/Terrain/3SideS*.pngDebug Message:  No files found matching mask gfx/Terrain/3SideW*.pngDebug Message:  No files found matching mask gfx/Terrain/4SideN*.pngDebug Message:  No files found matching mask gfx/Terrain/4SideE*.pngDebug Message:  No files found matching mask gfx/Terrain/4SideS*.pngDebug Message:  No files found matching mask gfx/Terrain/4SideW*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/1SideN*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/1SideE*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/1SideS*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/1SideW*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/2SideN*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/2SideE*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/2SideS*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/2SideW*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/3SideN*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/3SideE*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/3SideS*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/3SideW*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/4SideN*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/4SideE*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/4SideS*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar/gfx/Terrain/4SideW*.pngDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\./Data/ShipCfg/\*.shipcfgDebug Message:  No files found matching mask C:\Program Files (x86)\Stardock Games\GalCiv2\DarkAvatar\DarkAvatar\./Data/ShipTemplates/\*.shipcfgDebug Message:  Reading Star NamesDebug Message:  Reading Star Names... DoneDebug Message:  No files found matching mask ./Data/English/Tutorials/*.xmlDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\Backup\*.savDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\CustomMaps\*.savDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\Dark Avatar\*.savDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\Gfx\*.savDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\Metaverse\*.savDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\SandboxGames\*.savDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\ships\*.savDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\ShipStyles\*.savDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\shiptemplates\*.savDebug Message:  No files found matching mask C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\temp\*.savDebug Message:  Loading save game C:\Users\Steve Rozier\Documents\My Games\GC2TwilightArnor\Altarian Dominators.savDebug Message:  Killing threads.Debug Message:  Kiling civs.Debug Message:  Killing ships.Debug Message:  Killing rallypoints.Debug Message:  Killing misc objects.Debug Message:  Killing stars.Debug Message:  Killing anomalies.Debug Message:  Killing asteroid fields.Debug Message:  Killing asteroid field mining bases.Debug Message:  Killing space resources.Debug Message:  Killing ascension crystals.Debug Message:  Killing colonies and planets.Debug Message:  killing scenario.Debug Message:  Clearing Turn Event LogDebug Message:  Clear galaxy settings.Debug Message:  Clear influence.Debug Message:  Clear up laws.Debug Message:  Clear first time events.Debug Message:  Clear wonders and trade goods.Debug Message:  Clear sector mapper.Debug Message:  Loading Custom MapDebug Message:  Loading Data DefsDebug Message:  Clear data definitions.Debug Message:  Killing ship styles:Debug Message:  Loading TechDefsDebug Message:  Max num techs: 523Debug Message:  Loading ImprovementDBDebug Message:  Loading Component DefsDebug Message:  Loading ShipTypesDebug Message:  Loading ShipTemplatesDebug Message:  Loading ParsedHardpointsDebug Message:  Loading AnomalyTypesDebug Message:  Loading RandomEventsDebug Message:  Loading UPIssuesDebug Message:  Loading ResourceTypesDebug Message:  Loading InvasionTacticsDebug Message:  Loading SBmodulesDebug Message:  Loading PoliticalPartiesDebug Message:  Loading Planet TypesDebug Message:  Loading Star TypesDebug Message:  Loading AFMBModulesDebug Message:  Loading ShipStylesDebug Message:  Loading TechTreesDebug Message:  Loading TechTreeDefsDebug Message:  Loading GameDebug Message:  Loading: Game mode is normal.Debug Message:  Loading GalaxyDebug Message:  Game started in version v2.03 Twilight of the ArnorDebug Message:  Sectors across: 12 x 12Debug Message:  Loading FOW MapDebug Message:  Loading ZOC MapDebug Message:  Loading PlanetsDebug Error:  No planet description found for heavy gravity worldDebug Error:  No planet description found for Radioactive worldDebug Error:  No planet description found for heavy gravity worldDebug Error:  No planet description found for toxic worldDebug Error:  No planet description found for toxic worldDebug Error:  No planet description found for Radioactive worldDebug Error:  No planet description found for heavy gravity worldDebug Error:  No planet description found for heavy gravity worldDebug Error:  No planet description found for toxic worldDebug Error:  No planet description found for heavy gravity worldDebug Error:  No planet description found for heavy gravity worldDebug Error:  No planet description found for toxic worldDebug Message:  Loading StarsDebug Message:  Loading AnomaliesDebug Message:  Loading ResourcesDebug Message:  Loading AscensionCrystalsDebug Message:  Loading AsteroidFieldsDebug Message:  Loading AFMiningBasesDebug Message:  Loading CivsDebug Message:  Loaded Civ The Blue Men who has intelligence 65Debug Message:  Loaded Civ Arcean Empire who has intelligence 65Debug Message:  Loading player civ Altarian ResistanceDebug Message:  Loaded Civ Torian Confederation who has intelligence 65Debug Message:  Loaded Civ Thalan Empire who has intelligence 65Debug Message:  Loaded Civ Drath Legion who has intelligence 65Debug Message:  Loaded Civ Korath Clan who has intelligence 65Debug Message:  Loaded Civ Krynn Consulate who has intelligence 65Debug Message:  Loaded Civ Iconian Refuge who has intelligence 65Debug Message:  Loaded Civ Yor Collective who has intelligence 65Debug Message:  Loaded Civ Akilians who has intelligence 76Debug Message:  Loaded Civ Carinoids who has intelligence 74Debug Message:  Loaded Civ Scottlingas who has intelligence 78Debug Message:  Loaded Civ Jessuins who has intelligence 81Debug Message:  Loaded Civ Dark Yor who has intelligence 79Debug Message:  Loaded Civ Snathi who has intelligence 67Debug Message:  Loaded Civ Pirates who has intelligence 1Debug Message:  Loading ColoniesDebug Message:  Loading RallyPointsDebug Message:  Loading ShipsDebug Message:  Loading FleetsDebug Message:  Loading Turn Event LogDebug Message:  Loading TreatiesDebug Message:  Loading ENDGALAXYDATADebug Message:  Updating ZOC.Debug Message:  UIBeginGame called with g_ulLocalPlayerID = 2Debug Message:  UIBeginGameHelper: New Game StartedDebug Message:  UIBeginGameHelper: Mods are DisabledDebug Message:  Destroying ship Dark Yor Scout Ship M0 v1 124. Orbiting: 1Debug Message:  Was Orbiting: Dark Yor IDebug Message:  Destroying ship Torian Colony Ship M0 v2 160. Orbiting: 0Debug Message:  Destroying ship Thalan Constructor M0 v1 619. Orbiting: 0Debug Message:  Destroying ship Yor Constructor M0 v1 609. Orbiting: 0Debug Message:  Destroying ship Yor Constructor M0 v1 584. Orbiting: 0Debug Message:  Updating ZOC.Debug Message:  Random Event: BeginDebug Message:  Random Event: EndDebug Message:  EvalDebug Message:  AI didn't find a good projectDebug Message:  AI didn't find a good projectDebug Message:  EvalDebug Message:  EvalDebug Message:  EvalDebug Message:  Carinoids (14): Researching: Fleet DefenseDebug Message:  Carinoids (14): Researching: Xeno EngineeringDebug Message:  Scottlingas (15): Researching: Missile Weapon TheoryDebug Message:  Destroying ship The Blue Men Scout Ship M0 v2 1859. Orbiting: 1Debug Message:  Was Orbiting: Siblia IIIDebug Message:  Destroying ship Drath Defender M2 v2 1564. Orbiting: 1Debug Message:  Was Orbiting: Maestro IDebug Message:  Destroying ship Korath Colony Ship M0 v1 156. Orbiting: 1Debug Message:  Was Orbiting: KoraDebug Message:  Ship Influence Starbase 1268 has a bad ship assignment (7).  Setting it to NO_ASSIGNMENT.Debug Message:  Updating ZOC.Debug Message:  Random Event: BeginDebug Message:  Random Event: EndDebug Message:  AI didn't find a good projectDebug Message:  AI didn't find a good projectDebug Message:  EvalDebug Message:  Year: 2229. Arcean Empire traded Space Defenses to the Drath Legion in exchange for General Life SupportDebug Message:  EvalDebug Message:  EvalDebug Message:  Year: 2229. Drath Legion traded Xeno Ethics to the Thalan Empire in exchange for Research CentersDebug Message:  EvalDebug Message:  EvalDebug Message:  Snathi (20): Researching: Artificial GravityDebug Message:  Destroying ship Drath Defender M2 v2 1539. Orbiting: 1Debug Message:  Was Orbiting: Evenstar IDebug Message:  Destroying ship Drath Defender M2 v2 1865. Orbiting: 1Debug Message:  Was Orbiting: Polack IIIDebug Message:  Destroying ship Drath Defender M2 v2 1866. Orbiting: 1Debug Message:  Was Orbiting: Geta IVDebug Message:  Destroying ship Drath Constructor M0 v1 1545. Orbiting: 0