Hi there, I'm planning on upgrading my hard drive to a 320gb from Western Digital from the default 160gb that came with my MacBook. I have some programs on my current hard drive that use cd keys that can be only used x amount of times and some them are used up, for example Microsoft Office 2008 can only be installed on 3 computers and its currently on 3 computer (mine, my dad's, and my brothers) I don't have a Time Machine or an external hard drive to back up all my files and programs to and I don't want to spend money on stuff for that. What should I do? Sorry if this sounds confusing if you want me to explain more I can.