I ordered the new 17" PB and i havent own an apple computer since my apple IIe. I have only have PCs... soooo i was wondering what do i need to know when i get my PB? I know the MAC osX is different than windows.... but i need someone to explain to me different things i need to know.... like updates? what is this about not shutting off your computer?? What is the terminal? What do I have to know about file converting? Any tips or advice anyone can give me will help! Thanks!! I cant wait to get my PB!!! I'll probably be a MAC girl now instead of PC!