Anyone buy from Crucial Ram? I was thinking about getting a 1GB stick of ram for my Powerbook 12" when I buy it next month, but I was wondering if the how-to guides and the recommendations on the website are accurate? Also, is 1GB necessary for Tiger? I want my pb to run as smoothly as I can while I do basic stuff like e-mail, web, chatting, maybe some emulators, and music...