Hello, Thinking about getting a MacPro. Questions are: 1. If you get the single 2.8 chip, is the mother board already configed with a second socket for easy upgrade later? 2. Will the new up and comming Nahalem chip have the same footprint as the Penryn? Being that it's six core, I'm guessing not?? 3. I was thinking of purchasing with the standard 320G HD, then installing two aftermarket 1TB HDs. Would I need a raid card? The purpose of the drives is for working with video and photos on one and backing up to the second HD. 4. What is the preffered graphics card? Planning on driving two 24"ers or a single 30 inch. I've heard of some updradability issues with one of the n-vidia cards.