I have an Apple Powerbook 520C laptop a neighbor gave me. He's looking to upgrade the memory on this thing and he wasn't too sure how to do it. I have very little experience with Macintosh and Apple products and I'm not sure how I would go about doing it myself. I'm not sure, but I think he wants to run games on this thing. It didn't come with anything but a power cord, a CAT5 cable, and a carrying case. Any help or suggestions would be greatly appreciated.