Hi! I'm new to the forum - I would usually just ask my boyfriend for help with this, but since it's his Christmas present I can't (lol) and this was my first stop for help! I'm trying to buy him Windows Vista for his Mac. He has an older 13" white Macbook, nothing special. He downloaded Snow Leopard for the 64 bit support, and has (as far as I'm aware) downloaded the drivers for Bootcamp and all that jazz. He has a version of windows now, but he needs a new one. My question, specifically, is that if he has Snow Leopard and the 64 bit support, should I make sure the Windows OS that I buy has 64 bit support also? I only just noticed that there is, apparently, a difference between the "old" 32 bit versions and the "new" 64 bit ones - does it matter which one I get him? Thanks!