I'm in the market for the white MacBook, but have a few questions about upgrading it on my own. I want to increase my RAM to 4GB, which I can do for a lot cheaper than what Apple charges (2GB is standard, Apple charges $90 to upgrade to 4GB). I'd also like to increase my hard drive to at least 320GB (160GB is standard, Apple again charges $90 to upgrade to 320GB). How easy is it to upgrade these on my own? I'm an electrical engineer, so I'm quite comfortable replacing these components on my own as long as it's not too difficult. I've made a few upgrades to my iMac G5, but had heard that the MacBooks were a PITA to work on. Any advice from those that are familiar with this system? Thanks in advance.