Okay, so according to the guy at the Genius Bar, my Mac is dying. Apparently there's a problem with the hard drive, it's barely spinning at all. Finals are coming up and I have dozens of pages of papers due, so I need my mac to last just a couple more weeks. The tech recommended replacing the hard drive myself, rather than paying Apple inordinate amounts of money to have it sent in and replaced. My question is this, where do I get a replacement hard drive, what are the specs I have to look for in buying one, and does anyone have a line on how-to steps for replacing my hard drive myself? The more direct links that can be provided, the better, as my computer is hating me more and more and has become exceedingly difficult. Thanks!