nVidia drivers shouldn't work too well with the competition.
My old Geforce ti4200 had the fan die about a week ago now, and now I've been forced to get a new video card. I went and got an ATI Radeon AIW 9800.
I uninstalled all my old Geforce Drivers, and installed the new Card in, hooked it into the power supply (as it needs to be) and then booted up my comp. Well, now at the DOS Bios screen, my screen is half covered with all sorts of wierd