Ok, I did a search and still couldn't find answers to my specific questions. If I'm using an external hard drive (WD MyBook USB 2.0) with my MBP, and I install a lot of applications to my MBP such as MS Office, Rapid Weaver, Photo Shop, etc. And I make regular back ups using Time Machine saving to my external HDD, and then say my MBP dies and I buy a brand new mac computer. Can I just plug in the external HDD to my new mac and have all my photos, programs (including Office, RW, Photo Shop), music, etc. added to the new mac without having to install them? I'm confused, it certainly can't be THAT easy can it? How would they protect the software rights? And, I thought you needed a disk to install programs?