NOOB here needs advise

[hiei1942]

Trouble running this game, I have been all over this site looking for advise to fix my Frame rate problem. I have tried various ideas that members have sugested but still nothing seems to work.

I am also getting a white box about 3x3 inches in the top left corner in the screen that will not go away. when I am in a mission, I have turned the graphic down to low on everything and still very choppy game play. almost unplayable. Any help would be greatly appreciated thanks

Here are my computer specs. I just built the system two weeks ago

I7-990 extreme 3.46 ghz
Asus Rampage 3 extreme motherboard
Corsair 16gb ram 1600mhz
Dual sapphire HD 6970 cards in Crossfire. driver 11.7
Windows 7 64
1920x1200 monitor