Hi! Ive been lurking on this forum and been reading alot of great advice from you all! I have decided to buy an apple macbook tonight (blackbook), ordered 2gb ram, and a 120gb hdd (internal), and a 500gb external. I have never used a mac before, but I look forward to using one soon for medical school! I hope this macbook is as good as everyone says it is. As far as upgrading my hard drive, do I need to buy a new copy of Mac OSX tiger when I install my 120gb Seagate? Anyone wanna buy a 80gb Hdd? Thanks for all your advices and help! I look forward to some great responses as usual.