I recently purchased an XFX GeForce 6200 graphics card to replace my older GeForce FX 5700 Ultra. When I ran WinXP Pro with my older card I was getting a steady 60FPS in Team Fortress Classic and a solid 30-35FPS in Counter-Strike Source. Now I'm getting 20-30FPS in Team Fortress Classic and 7-15FPS in Counter-Strike Source. I'm just curious to know if it's the operating system, or perhaps the vista drivers (yes I have the latest drivers installed 96.85). Windows Aero works flawlessly and I'm really happy about that, but not happy about the low fps in my games. If it is VIsta I will definately re-install WinXP until better drivers come out, but if it's something else, please induldge me. I know I'm not supposed to be getting crazy high fps in my games with this card, but it's definately supposed to out-perform my other one. Thank you in advance for the replies.

I dont know, why you have dropped performance. I have the old good AGP GF6800GT and when trying Splinter-Chaos Theory, all is faster. Loading, FPS and gameplay is smoother than in XP. I know so this dont help you, its only my situation.