I have read through the past threads on HDD replacement for PowerBooks, and most of them have ended or the other one I have read was in March. So I wanted to ask the questions I have and wanted to get some straight answers that I can easily read here. Also, i don't want an external FW/USB drive. I have a 12" PB that I just purchased(so it is the latest version) 1. Link for instruction on opening up the PowerBook and replacing HDD and tools needed to do this 2. Definite answer on warranty issues. With AppleCare can I replace the HDD but if I need service swap it out myself? Or do I have to have Apple Technician replace the unit to keep the AppleCare intact and then have him swap it out if I needed to send the unit in? Also, how much is the service at the Apple store for this? 3. What is a reasonably priced and speced 5400rpm and 7200rpm drives 60-80GB? And where is the best place to buy them? 4. Is this a fairly easy process? 5. Is there anything else that I can replace to improve things other than memory? Would appreciate additional information to centralize and update some information on this issue.