For gods sake this place is like a ****** junior school playground sometimes , Grow up!!!
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For the OP, I'm running an 8800GTS 320 & game at 1650/1080 & it's perfectly happy in everything I play & that includes Oblivion , FEAR , STALKER , C&C3 to name but a few so you'll have no problems what so ever at your res
, And that's with a 4400X2 & i'm running Vista64 too.
Anyone who says a 320meg 8800 can't game at these resolutions either hasn't tried or needs to do their homework on optimising their system.

For the OP, I'm running an 8800GTS 320 & game at 1650/1080 & it's perfectly happy in everything I play & that includes Oblivion , FEAR , STALKER , C&C3 to name but a few so you'll have no problems what so ever at your res

Anyone who says a 320meg 8800 can't game at these resolutions either hasn't tried or needs to do their homework on optimising their system.