I only have enough money for one. As the Ibook will be my only computer for University I'm debating between an external HD to up my remaining space which is only 12 Gigs @ this point, or getting another 1 Gig stick to put in. All I'm doing with this comp is Surfing, Downloading Music, Chat, Word Processing and maybe the occasional game of Warcraft 3. Is the extra RAM that necessary or should I go for the external HD to help store my music