Sigh. I just bought a used XFX 6600GT 128mb PCI-E card for some light gaming (WoW) basically just to replace my crap onboard graphics. I know the card is not fried because it powers up and the fan is spinning. I can't get my effing computer to recognize it! I keep disabling my current card, and uninstalling the drivers, then I reboot, log back in and they just reinstall themselves. I've tried going through BIOS but there is literally NO option for what I need to do. No GPU option at all. My dad said there may be some little jumper somewhere on my MOBO that I can switch. Are there any other possibilities? I'm getting really frustrated. BTW, I'm using a PCChips p55g mobo and Vista. Thanks for your help...really apprecaite it.