I recently read that if I wanted to add RAM to a Macbook that I should NOT buy it from Apple, but from some other vender because Apple charges too much. If that's the case, is it easy for a consumer to add RAM to one of the new Macbooks? If not, then maybe I should spend the extra $$$ and have Apple install it. If I can add RAM, does it void the warranty? If I do nothing more then surf the Internet, load photos, burn DVDs with Handbrake, do I need more then 2 GB of RAM?