cannot connect to c&c generals zero hour online

Generals, Zero Hour, C&C3, Kane's Wrath and Red Alert 3 all used the Gamespy system for their online play, but the whole system has been shut in July 2014.

However, community servers have already been set up, so it should be possible to play online that way. More information on that can be found at http://cnc-online.net/

i installed Revora and it gives me "Zero hour installation not found"