Bruce,
I checked CVS to make sure my changes have made it into the OpenACS version. (2003-12-12 Merged by Rocael. Thanks.)
You can to change the numbers of the photos in the 'Edit Photos' page (/photos-edit). The initial numbers are the object IDs assigned when uploading the photos. You can change them to order photos more sensibly. I like to use increments of 10 so that I can easily make changes later.
After comitting your changes to the DB your photos will be displayed in the new order. Re-visiting photos-edit will also reflect the new order. A convenient way to make incremental changes.
/Bart