For various reasons, I think my 4-year old MacBook Pro is near the end. I have a few questions in preparation for this event: 1) If I get a new MacBook Pro, should it recognized and restore my old system from Time Machine that is backed up onto a WD Hard Drive? 2) I just put a new internal HD into my Macbook and upgraded to Snow Leopard. I also added to 2 RAM chips. Is it possible to buy the body of the a Macbook and transfer my old HD and RAM chips? I'm trying to handle the $2500 price for a new unit. 3) If I decide that Mac's not worth an extra $1,000 compared to a windows machine, can I transfer my iTunes library from Mac to the new Windows machine? I think everything else on my computer I can transfer over. Thanks in advance.