Windows Photo Gallery database backups, how to do it

Windows Vista comes with a neat and slick little application called the Windows Photo Gallery, which is an utility aimed for showing and organizing your digital photos based on EXIF metadata and keyword or tags.

Now, I have about 10,000 photos only with my year-old DSLR (which isn't a lot, even) and organizing them can be difficult. I'm thinking of using Vista's Photo Gallery (WPG) for this task, but them again I'm always worried about backups. So I did a little investigation, and found our that WPG stores its settings in the following path:

C:\Users\Jani Järvinen\AppData\Local\
Microsoft\Windows Photo Gallery

This directory contains two files: NavTree.state and Pictures.pd4. These files are both binary, and I don't know what kind of database files they are, but it seems that if you take backups of these files (and of course of your photos!) *and* the locations of the photos, you should be fine. Disclaimer: I haven't yet tested if this really works as I expect it to work.