I have 2 video cards, both the same. I am running 2 monitors with DVI and a DVI to RGB adapter on a set of projectors. I can hook the monitors on the first video card and the projector on the second, but the image on the projectors which is display 3 does not work. If I add the projectors as the second display on the first card they work, but if I then plug the 2nd monitor into the second card, the 2nd monitor works and the projectors (card 1 output 2) stop working? Any help would be greatly appreciated.