Hi - I've searched and noticed that this has been requested before, but I don't see it in the admin, and when I add a folder in my ftp (zenphoto/album/albumname/subdirectory) it doesn't appear anywhere. I really like ZP, but without sub-folders I don't think I'll be able to make it work.
Thanks!
Kevin
I also needed subfolders---my solution was to install multiple copies of ZP.
See also ticket #2 or the theme Effervescenc+SimpleViewer for paging of subalbum thumbs. To view this theme: http://albums.sbillard.org/Test%20Album/