8) I think your problem could be because they won't be using the same driver. See, ATI cards use Catalyst which comes with HYDRAVISION for multi-monitors, and nVidia has Forceware with(i dont remember) for their multi-screen setup. So even though windows boots them together, you may not get them to actually work together. Hopefully someone who has gotten a RADEON and GeFORCE to work together like that and can tell you how they did it, but i'd just sell both cards to some body and get a better card cause you CAN run different RESOLUTIONS as well as different CONTENT on each monitor with the ATI AVIVO and GEFORCE 7 cards, or so they advertise.