The guide Cari has is the one I was using; but the problem is that for some reason the game isn't recognizing the mod itself. I have it pointing to the directory (in this case: G:\Program Files (x86)\GalCiv2\Mods\Cursix) but it won't recognize the two custom XML files in the data subfolder (CustomPlanets.xml and the raceconfig) plus, the guide doesn't explain how to get each custom race to USE those planets, and if it does, then I'm clearly blind =| (This is my very first attempt at modding a game, I usually leave the modding to a friend, but he doesn't play this game, so I wanted a crack at it)