Ok bought a new 22" lcd yesterday and while playing my games ive notice a signifcant drop in FPS. My board has two PCI-E slots was thinking about dropping a nv8600 i have laying around my shop in just to run my second LCD, Good idea, bad idea, discuss =)
I could be wrong since I am still using XP, but...
Based on what I've read, WinXP will allow you to uses both ATI and nVidia drivers. Vista (and presumably Win 7) only allows you to use one set of drivers. So under Vista, both cards must be ATI or nVidia.
Seems like the OP posted while I was responding.
There is no workaround. Both cards must be from the either ATI, or nVidia.