When I play the game, I get weird random polygons popping up and characters disappearing for no reason. This is sometimes barely noticeable but sometimes it completely overwhelms the screen. It's sometimes accompanied by "static" sounds and static-like pixels appearing on the screen.
It also crashes the game when it gets really bad. I have an NVidia GeForce 6600 and have fully updated drivers. I am running it on Windows XP. Any ideas?