Im assuming your trying to make a gallery from images you own... or inside of your own server.....not hosted gallys right.... I recently tried doing this as a practice project for one of my sex sites I plan to create this summer.... this was before the 2.1 updates
the only one I saw was d13 however it seems the site is now defunt(site dead)
see:
http://davwal5.coconia.net/?cat=7
alternatively you can use
http://foldergallery.jv2.net/
using the php include function which will work similarly if you have the php plugin on your wordpress(the one to execute php code that is.)
also try looking here
http://www.google.com/search?client=...utf-8&oe=utf-8