Sure, although I am not much of a windows person, its probably as easy as running the windows backup software (start --> programs --> accessories --> system tools), choosing the medium (cd burner) and then feeding it cd's. Your burning software probably has something built into it also. Not sure why you would want to do this though. If you want to reinstall windows, a quicker and easier solution would be to back up all the files you want to keep, then wipe the harddrive and do the reinstall. This will save you a lot of time, and a lot of cd's.