I've installed the GalCiv II Desktop, believing it was a game extension only to find out it was a program that modifies Windows XP themes. So, wanting to uninstall it, I tried first the uninstall program, which didn't work and popped up a weird screen instead, apparently the uninstall prompt without text content (see screen shot below) and then the Control Panel add/remove, with the same result. I reinstalled that, which allowed me to uninstall the reinstalled program, but not the first one.
So, how do I remove this desktop theme thing completely, restoring my XP Pro SP2 to its prior state? Thanks in advance!
Here's the screen shot of the uninstall window that won't work: