LOOOOOG time MS user (DOS 1.1 to Vista 64) seeing the light. Looking at buying a mac pro and getting the standard 320GB HD. Then swapping out and installing 2 1TB HD's. First can I remover the standard (A) 320GB HD (are HD's labeled as A:, B:, C:, ....?) with operating system and replace with a 1TB? Also will Time Machine work on an internal HD (2ed (B) 1TB HD)? All Apple documentations says to hook a USB or Firewire for Time Machine. Also should the Time Machine HD be larger or is the same size okay (1TB and 1TB)? Also can I install my copy of Vista 64 (upgrade not OEM) on the Pro using the same method as on a PC? Would likely use Parallel and not Boot Camp.