christ. i can play games that were made back in the windows 98 days and they are fine. compatibility is better on vista that xp rather than the other way round. especially on newer games
search online dude - I was having an issue on the laptop where I'd always get kicked off servers, my flatmate who's a bit of a computer knowledable, searched online and found that sometimes you need to fiddle with the registry entries, and ouilah, he fixed it
could just be the simple case of a certain setup not working well on a certain game. not into PC gaming much anymore, but when i was this was a common problem. certain setups didnt work to well for certain applications.
Me either, jus said i'd try to check out the graphics, havent much time to be gaming anymore but just wanted to see graphics wise!! anyway cheers lads will do a search