Running FSX on 2 monitors in Windows 7 x64

Thanks for repeating this. I did exactly what you said, starting with my second monitor switched off, but when I move FSX to full screen, the 2nd. monitor goes black. Are your GPUs ATI or nVidia? If the former, could be that my GTX470 won't allow this. If you have nVidia then I am stumped!! How come you get it to work and I can't? It's quite a big deal too, as I can't have flight maps open on the 2nd. screen. Like to know what it is that prevents this from working in FSX when FS9 has no problem. Not a step forward to say the least - and yet another reason why I fly FSX one time for every hundred times I load up FS9.Thanks again,Martin