Guys I have a question that I just want a definitive answer to so I can proceed with my decision. Under bootcamp windows7, can I use any of the new AMD graphic cards(like the HD 6970)? I have a Nvidia 8800 GT right now on my mac pro 3.1 and I would like to upgrade. However I only really need the new graphics card for video games so if I were to keep the Nvidia 8800GT and put the AMD 6970 HD in as well. Could I use the AMD 6970 for windows 7 and the Nvidia GT 8800 for OS Lion? Or would there be problems with the AMD 6970 since its a apple motherboard and there would be compatibility issues or something? Also does it matter whether the PC card for the AMD HD 6970 is made by ASUS,Sapphire etc?