I found what looked like the perfect module for my purposes but the developer has withdrawn it from the market.  I am looking for a gallery module that will let us reference images external to the site, e.g., get images from Photobucket or other external sites.  Any recommendations?  I can write an app but if there is a module out there, that is even better.

Almost!  I need the full sized images to be clickable, too.  I don't see this in any of the demos.  Will investigate further.  Meanwhile I wrote an app to do this that is not dependent on the DNN version.  That is one way to spend a cross-continental flight.