Hello everyone,
I'm new to the ZenPhoto world and I apologize if this is a dumb question but I'm having a hard time trying to install some third party plugins.
The plugins at issue are: zenSocialShare and ZenBits.
I downloaded them, unpacked them and uploaded them into the rootzenphoto/plugins/ directory but I can't find them in my admin panel. I cleared my cache, logged out and back in, nothing works.
Am I doing something wrong?
Help please. Thanks.

You probably uploaded the folder you got after unzipping but you need to upload the content of those folders:
http://www.zenphoto.org/news/using-plugins-and-third-party-features

I did, in fact, upload the folder I got when I unpacked the .zip file. I did as you suggested and now I can see both plugins in the admin backend.
Thank you acrylian!