This is my beautiful clamshell ibook, i love it and wouldnt give it up for the world. It runs os x tiger pretty well, but sometimes it gets a little choked up, and it cant run youtube very well. it currently has 320mb ram, thats 64mb soldered to the logic board plus a 256mb chip. i know i can take the 256 out and put in a 512mb chip, leaving me with 576mb ram. but i have absolutely no idea what kind to get, and i've googled it for a while. can anyone help? i also wanted to upgrade the hard drive, but after looking at the steps required to replace a hard drive in these things, i quickly changed my mind.