I could distribute the code that I use for chiefdelphi's gallery.
I have a non-vBulletin version that I used for a project in a User Interface class a year or so ago. It even has more features, like a discussion thread build into the 'display image' page, and other neato things. Let me see if I have it still, and it works. I'll get back to you.
It would require PHP & mySQL.
-Brandon