you are wrong. it worked for me. I sold my GTX280 and bought 2 4870's and i love the game. with nvidia cards i couldn't play because the game looked like the picture in the first post. So you tried what i suggested and it failed?
Here is how to solve the problem in a few simple steps, It worked for me and i am now happy with graphix. 1. Remove Nvidia card 2. Install ATI card and drivers. 3. Game will work the way its meant to play. h have fun. cheers.