So I'm looking to upgrade my video card for my 1,1 '06 Mac Pro, I do some light gaming (TF2, L4D, etc) but my bigger interest is Folding@home. So for this reason I'm thinking 8800GT would be a great card to move up to (I don't want to drop the cash for a 285GTX). The only problem is I'm not sure how to find one that will work in a Mac Pro 06. I know Apple store had one model for older Mac Pro's and one for newer ones. Is it possible to flash a PC model 8800GT into an old Mac Pro? I'm comfortable flashing cards and such, but I just want to make sure it can be done. Also, I'll need to find a BIOS for it. Can anyone help me out?