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There are so many files though, I don't think it could be of much use unless you're particually looking for a certain file. If you're wanting to backup your saves, maybe copying the whole "regions" directory would work?
Don't trust me on that though, I haven't tried it and it's only a guess.
And for future reference, there is a PC Games forum here:
http://www.ukchatforums.com/display_threads.php?forumid=422
If you ask there, more people might know, although it's hardly the most popular forum I've ever seen.