So I installed a GTX 295 and downloaded the drivers off of nvidia's web site. Preveusly I had a Radeon 4870 X2 that came with the computer. The 4870 X2 stopped outputting video so I sent it back to alienware in exchange for a new card. They sent me back the GTX 295(with no software) instead of a radeon(which I was fine with). But now I'm getting an error message from ATI Catylist control center, saying the card is not supported. And now when I try to play a game it will stop out-putting video. Is it the ATI drivers that's causing this? How do I uninstall them? I can't see any ATI programs when I go to remove programs from the control panel.