I can't get FSInn and Copilot to work, is there something else out there that will do the same thing? 

I believe VATSIM also uses SquawkBox - but not sure if other servers do.

 

FSCloud has a connection in "pre-Beta" that is acutually pretty slick - very simple to use, no 'sign up' (just give yourself you own name/handle and call sign) and you're on. Runs in 'Free Flight' mode like FSInn - but only capable of connecting to the FSCloud server. But, if you're looking to fly with other folks (especially those that don't what the hassle of FSInn) then this might be one solution. Does not support helicopters (yet). http://fscloud.net/