Hey All, I've got a 2.2 Ghz SR MBP base model and was wondering if there is any exchange system or anyway to downgrade and move into a Blackbook. I love the MBP don't get me wrong, but walking from class to class and utilizing it in cramped seats with other students is kind of a hassle. I feel the more compact model will do the trick. This computer has not traveled hardly at all. Not a scratch on it. Any ideas aside from eBay? Thanks.