I did a search on MR, and couldn't find a previous thread to completely answer my questions, so I hope you all won't be annoyed or mind me asking the following: I am selling my PB, moving to a MBP. I have transferred all my files (photos, music, documents, etc.) already, and I plan to sell my PB to my neighbor. 1. This is my first time, so I'm really unfamiliar with what to do. I know there is an option called "zeroing data" and "system erase and restore". What do you recommend doing? I've consulted Apple Support's website and browed through some MR threads here, but I'm really clueless and am confused as to what to do. FYI, I have FileVault activated on my account right now, but I have transferred everything already to my new computer. 2. The PB originally came with Jaguar (10.2), and I've upgraded to Panther, and then Tiger. Will the PB automatically revert to Jaguar, and will I/she lose the updated iLife/iWork '06 that I installed a while ago? How about Microsoft Office v.X? Will I loose that license too? 3. If #2 is true, can I re-use the CDs, or are the licenses one-time-use only and permanently used up? 4. Kind of off-topic, but ball-parking, how much would a pristine 17" PB 1.33 Ghz w/ 1.5 GB RAM roughly fetch for? I was browsing eBay, and some of the Buy-It-Now prices were very different from each other. I am selling it to our neighbor/mom's old friend, and I think none of us know what price to sell it for. All I know is that I paid over $3000 for it almost 4 years ago, and it's worth far far less today! 5. Any other suggestions?!? As you can tell, I've never sold a computer before, so this is all new for me. I would have kept using my almost 4-year old PB, but I'm heading off to college this fall, and need the size of the 15". Thanks a bunch, I really appreciate it!