I am building this site for a client.
The list of items are updateable via PowerCMS and the item images are enlargeable using lightbox.
Fairly straightforward but the client will need to edit a small piece of the source code in the editor. They have to add "rel=lightbox" to the image link in the source. (If anyone knows a way of automating this I'd be grateful by the way).
I guess it would work with an image gallery.