Autotheme seems kinda nifty too, wonder if there's any for Geeklog too? Autotheme is for phpNuke/ Post nuke only...for now...
"AutoTheme is an HTML Theme System for PostNuke and PHP-Nuke. The
current theme system usually requires you to be somewhat familiar with PHP and
the PostNuke or PHP-Nuke architecture. AutoTheme removes this complexity.
PostWrap is a PostNuke module that enables virtually any web content such
as HTML or scripts (home pages, galleries, shopping carts, php, perl, asp, etc.)
to be easily incorporated into your PostNuke site.
Also, NukeWrap (PostWrap) and NukeJump (PostJump) for PHP-Nuke."