So, my Mac Pro is on it's way to me and I wanted to order some RAM. from some of the posts I've been reading it appears that is uses some odd form of DDR2 RAM? is this correct? So does this mean that I can't just get me some good 'ol DDR2 667 RAM from newEgg? They have 2Gig kits for like 250.00, but the places like OWC, memorytogo and Crucial reach as high as 550.00 for what appears to be the same kit... Can this be explained further for me? sorry, maybe I'm halucinating. thanks for any info.