Here's my best recommendation: Backup your runtime folder. It contains everything you want to save. If you have a CD Writer, it's the easiest. I will warn you that this can consume a few CD's. Probably the easiest way would be to zip each folder within the runtime folder: geometry, characters, etc etc. Then if you're lucky a few folders will fit on a cd. If you ever need to reinstall all your programs, you'll have your zipped runtime folder. I did it, and it worked fine.