The purpose of this post is to try and get a NVIDIA AGP card and an ATI PCI card to work together to display a four monitor desktop. I recently took over a network administrator position and I am having trouble with a older PC. For some reason the previous made Dell load Windows 2000 OS instead of XP even though there are Product Key stickers for XP on the PC. The quad core video card went out and I can't find a quad video card that works on Windows 2000 (I can't use E-Bay, boss said no). So I am going to have to use two old dual video cards. Has anyone every use dual video cards and not the same brand. I am looking for steps, instructions , etc. There is also no onboard video card.