Ha!!!
We'll discuss this later Tailspin...
BTW, I ran it at 1920 x 1080 (native for my monitor), left every setting as it came (looked like medium everything) and set AA at 4.
No modded graphics files either.
Ran smooth, no issues.
My System:
Win 7 Pro 64 bit.
Intel Core 2 Duo E8500 @ 3.16ghz.
6 gigs DDR2
EVGA GTX570 Superclocked
Creative X-Fi Fatal1ty Gamer sound card
Gigabyte EP45-UD3R mobo
PC Power and Cooling Silencer 750 psu.