Hi guys, I should know this stuff already since I'm a computer systems engineer, but I'm very software oriented and I only buy hardware every 4 four years or so... I just upgraded to Leopard and I feel that my 17" G4 Powerbook is still as good as new except for the fact that it only has 512MB of RAM. I want to buy more RAM for it, but it's been so long since I last bought RAM that I don't even know what type it uses... I don't even remember if there's a difference between your regular Windows Laptop RAM or not . So basically I just want to know what type of memory is compatible with a G4 PowerBook and what are the best brands out there. Thanks