Agreed, Kev. Ain't IW wunnerful?
You should be able to navigate back to it if you boot in safe mode... [img]smile.gif[/img]
And that kind of save is an incremental backup, which can be done quite easily. The drawback is that the incremental backup is much less effective without a full backup to restore first.
Personally, I try to do a full backup of just the files once (and once every major event, like an upgrade), and then save my data files separately on a regular basis. Then I just have to restore the total files, and then overlay my last data. The trick is making sure to save all the relevant game files...