Do I have to be connected to an Internet connection before I can use home sharing on apple tv

I Would like to know the same thing. I had Internet and everything ran smove until I stopped my service. Now it continues to search and search for my library. My computer is an iMac. What gives!!

Home sharing requires a network, read resolution 4 on the link, it says a network with active internet connection.

http://support.apple.com/kb/TS2972

Regards

Jules