Follow the script description here, But instead of removing the perl from the cygwin installation and adding stuff to the path :) Simply replace the cygwin perl.exe file with the script.
Perl and the windows registry links:
http://cpansearch.perl.org/src/INGY/Kwiki-0.39/lib/Kwiki/Registry.pm
http://www.xav.com/perl/site/lib/Win32/TieRegistry.html
Darn, did you ever have trouble remembering just how you did this and that on your Box???
