I have a 17" PowerBook that has seen a lot of action. It has been through a very tough 21 month Exectuive MBA program, run countless financial models, built numerous web pages, written 4 screenplays, 12 business plans and has handled 100's of presentation. It has been to Japan, China, Spain, Mexico and Taiwan just to name a few places. I can't help but feel attached to this system. I must also add this is my first Apple computer, so as I look to upgrade to a new system, I can't help but feel a little guilty. Now I am left with a question I pose to you guys. What do you do with your old Mac?