Downloaded Zenphoto via web hosting site (fat cow).When I enter my domain URL I get an empty box except for Gallery and search. I entered name and password for Zenphoto when signing up but do not see where to get into the system to upload photos.

appreciate any assistance

Did the setup program run? If not try running it directly /zp-core/setup.php. Maybe your server is not configured to consider index.php to be a valid default page.

If setup has run then this problem is usually because the mod_rewrite feature is not working on your server. Turn that option off in the gallery options.