I ran the training part of RvS problem-free. When I played online and threw a tear gas grenade in a room, it was black when I walked in. Perfectly black, I couldnt see anything in any direction wherever the tear gas spread to.

I also killed a guy and when I moved my crosshair off of him, the textures just came right off of him. When I put the crosshair back on, the textures went back.

I'm running XP Pro with 768 ram and a Radeon 9000 graphics card. Can anyone offer advice?