Okay, after the advice I got on this forum, I decided to go ahead and sell my PowerBook on Craigslist. I know this isn't the most proper forum for this thread, but there really isn't a better place. I have two questions: 1) Should I wipe my hard drive before or after I sell the machine? Should prospctive buyers use the computer as is so I can still use it until its sold, or should I back everything up to DVD and wipe my drive so I can demo a clean machine to prospective buyers? 2) What program wipes the hard drive so data is irrecoverable? I know this is advised for transferances of computers and have no idea which program to begin with. Thanks for your help!