Got a copy for "Work" purposes. Running a pretty buff system for todays standards - 2x Nvidia 7900 GTX's SLI'd together, Abit AN832X MB with an AMD X2 4400, 2 GIG ram and 2 300 gig HDs. Had the sliders set about mid range, was getting mid 20s for frame rates. Still tweaking with the settings, but it is a typical resource hog.
Will keep you advised.
Wolf