I have two photo albums that I want to combine as one and I don't want to have to upload all the photos all over again. Is this possible? Does anyone know how to do this?
Thanks!!

Two albums or two Zenphoto installs?

If the first: You can either move the images from one album to the other via ftp. or use the move/copy feature on the admin edit page. The latter will also move the data like descriptions you have entered on the backend.

If the second and two installs are on the same server you can just move the albums/image from the albums folder of one install to the one of the other. Zenphoto is filesystem based and will discover them. But note the data you entered on the admin backend will not move with the images unless you added them as exif data in the first place.

I don't know where that move/copy feature on the admin edit page. I don't have any feature like that......? What am I missing?

You did not answer the first question--Two albums or two Zenphoto installs

If you do not have the move/copy feature on the admin edit album-images page, then you should upgrade to a more modern version of Zenphoto.