Trying to get my dual monitor extended desktop happening in Win 7, but it won't recognize the 2nd monitor. I just get a clone of monitor 1 with no option to extend it. It worked perfectly in XP and I just upgraded to Win 7. I have a ASUS P6TD Delux motherboard and a ASUS ATI based card with DVI, VGa, HDMI video card. Any tips on drivers? It says they're all up to date.