hey, heres what happened: had an old Voodoo 3 that i replaced with a Geforce 3...installed okay, everything seemed fine. then tried out Op Flashpoint, autodetected to Direct 3D and ran sh!ttily (very low FPS) , only other option was Glide, so i let it be and started CS. set it to use OpenGl default, and it corrupted the screen and crashed every time i tried to start a game. went back and deleted all 3dfx drivers and reg keys ,thinking that might be it. that didn't work either, and im kind of stumped now. all i can imagine is that it might be the mobo (really old, running a celeron 300A, will replace it soon). any ideas guys?