are you serious?!
i thought 67.66 were the latest and greatest nvidia drivers out there. i usually download all my drivers from 3dchipset.com ... can you please tell me where you got 71.84 from?
on relatively low settings i was getting ridiculously low framerates, and my machine meets the minimum req's.
forget i asked ... they're listed as beta drivers on the site i mentioned above. they even have 71.90 and 75.90.