Whenever I try to run the game in XP on ANYTHING but software rendering and the lowest resolution possible, the game opens up with the Eidos logo music, yet the screen is black. After a while the music also stops and the screen remains black. And needless to say is that playing the game on software rendering with a crappy resolution isn't worth my time. By the way, that the demo DID work on this computer a couple of years ago when I installed it.
Also note that I have tried all patches, 1.02, XP and the like.