Hello Greg.
You could make a pdf about painful issues with Windows and how registry modification can help.

For example, recently I installed a pack of fonts. Both TrueType and PostScript. I was wrong when I used some program (FontNavigator) that I liked (before).
Well something went wrong and some of my system font became unreadable. Copy&Paste wrecked(from Unicode to non-Unicode programs as I determined)

I have fixed the problem by copying number of registry keys from working XP to mine. This was fun.

So, I guess it may be interesting to collect 10 real issues that could be fixed with registry fixing.

Oh, I forgot, could you include AMUST Registry cleaner 2.1 into your current Pdf.

Thanks, Max.