I'm looking to order a new Mac Pro, but I'm new to Apple and find myself uncertain how to configure the HDs. I'm going to order a machine with two HDs, and I'd like to run Vista 64-bit via bootcamp. (1) Can Vista run from a second HD? (2) Can OS X and Vista see each other's partitions? (3) If not, how does one share data between the two OSs? (4) In general, is one of these scenarios "better" than the others? (a) Both OSs on the first HD; data partitions for both OSs on the second HD (b) One HD for each OS and its data partitions (c) Doesn't matter; create partitions where needed Answers to these questions go to the HDs that I order. For example, if (4a) is a good way to go, then I might configure one 320 GB HD for the OSs and one 1 TB HD for the data. If (4b) makes more sense, then I might configure two 750 GBs. Thanks very much for any guidance. I'm really looking forward to my very first Mac.