iMac Graphics Card Utility

Hi,
I've just purchased my new imac with the AMD Radeon HD 6970M 2GB GDDR5 graphics card and just wanted to know if anyone knows of some sort of utility or software for this card to enable alterations to be made to the graphics such as anti aliasing and other features to try to improve on frame rates.
Cheers Kev.

None that I'm aware of. All those functions are handed off on a per-application basis and are altered in-game

Thanks for your help, much obliged.
Kev.