I was at the PGV site (sourceforge.net open source genealogy app) and saw there's a plugin (I guess) to Gallery2. Would linking it to ZP be at their end or ZPs? (So I know where to continue this request). The linking is to intergrate the photos used for family genealogy into a web album as oppose to the limited methods available within PGV.

Are you asking if a PGV plugin for zp is possible? I can't answer that since I don't know that other app.

Yes, would be a 'plugin' but not sure if it needs to be ZP to PGV or PGV to ZP. Just waiting for Dreamhost to fix update bug and will see what the Gallery2 one is all about.