I HAVE TRIED TO GET A CONNECTIONS BY OPEB=NIGN PORTS. STILLNOTHING HELP PLEASE

The brick is on the world
-1 of 5 red bars are green (when I put my cursor over it it says, "You are currently connecting to the network.")
-I don't know if I have a firewall, how do I check?
-I don't know my ISP, how do I check?
-I have Java\jre1.5.0_02
-Windows Firewall is off
-Limewire is an "exception"
-MICROSFOT VISTA