I recently moved a nvidea geforce9600 gso graphics card (pci express2) from my old windows xp-32bit computer to a newbuilt  P55 SLI running windows 7 64bit Intel i7 860Ghz. (8gig ram). On the old system the card gave me the option to extend fully onto my 2- 24" monitors giving me 3840 x 1200 ppi. That option no longer exists. Yes- I can expand work onto the two monitors and move work between them. It will not allow me full expanded screen such as I had on the old system (and very important for my flight simulator. If I try to drag/extend the image fully onto the 2nd screen, that screen is black. I have downloaded and installed all the updated drivers from Nvidia and EVGA. but nothing changes. Obvously I must be missing something. As you can probably tell, I am a novice at this. Any advice would be greatly appreciated. Please keep it simple. As an old real world private pilot, all I want is my simulator graphics working as it did on the old system. I am not running sli. Thanks for any advice, Joe