GPU: BFG OC nVidia Ge-Force 260 GTX
CPU: Intel Core2Duo E8500 OC @ 3.4Ghz
MB: Asus P5Q Pro
RAM: 4GB Corsair XMS-2
OS: Vista HP64
PSU: Corsair TX850w
Case: Antec 300
With that rig you'll probably have nothing to worry about, you''ll most likely be able to play the game with at least High settings, if not Ultra-High. Probably the latter in fact. The only thing you might want to consider is a DX11 compatible video card. Other than that, your computer is no doubt going to be good enough as is.