I back up my folders, but not the program. I don't zip them just copy them just like they are in the program, that way I'll save a step when I go to reinstall, like I'm getting ready to do now since I have a new harddrive. Last count from my backup was over 22 CD's worth of stuff. Needless to say, I will be going through everything after the new harddrive is installed and decide what I use and what I've just kept around every since I started Poser :) Pendy