Currently using a macbook, and hoping to get a mac pro once the update happens. I have 2 questions. 1. Can i buy the stock HD that comes with the Mac Pro, and upgrade other ones myself? (what kind of Harddrive does the bay take?) or if i want more storage, i HAVE to buy the ones that apple gives me? I know i can upgrade RAM elsewhere, but what about HD? further, does the additional HDs show up as separate drives in finder? 2. Superdrive, i see you can get 2 superdrives installed. Can I run Handbrake and burn 2 dvds at one time? How is this done? do i open handbrake up twice? or is this not possible? If not, what's the point of having 2 superdrives at all? Thanks!