I'm not sure you explained what it is you'd like to do clearly enough. Can you maybe be a little more detailed?
Sory my english is not very good
Eacg photo gallery on my website is an example from other website (photograph, model...). I want add with each gallery (for example on the top) the URL of the other website (and the ban ? )
When visitor look a gallery - he can clic on the URL to visite the original website...
THX !
You can add links and such in the description field of each album or image. Where this appears (above, below, wherever) on your theme page is a matter of how your theme is setup.
BTW. please note that "gallery" is the Zenphoto term for the whole installation. A collection of images is called "album". Just to avoid further confusion. Recommended read: http://www.zenphoto.org/2008/08/zenphoto-glossary/