G'day spencoid,

Are you familiar with CPAN? If not, take some time to find your way around that site.

Searching for registry produced some hits that looked like possibilities. One was Win32::Registry::File which might do what you want; another was flagged as obsolete but linked to these Win32::TieRegistry search results. The Win32::TieRegistry module seems well documented and has a lot of examples.

I don't use Windows (at least not in Perl context) so I can't say which of those might be best for your needs.