The way I see it, there are only two things that are the same:
Windows 7 (x64) and a nVidia card... if I'm right, all users with problems until now had a nVidia card. Do you use the 260.99 driver? Or maybe a newer beta driver?
N0, I do have windows 7 64 bit but my graphics card is a ATI HD5850 and I have no resolution option, but graphics are fine in game.