If you are getting to this screen;

And you dont know whats wrong
!check your FIREWALL I had the exact same problem and i have Norton
and AVG so i went on Norton Traffic, and looked at what was going on... and found that this was happening;

You have to disable any firewall, or just 'Trust' the IP address
Hope I helped
PS idk what the other threat was but Norton stopped it xD
PSS
VISTA PWNS YOU *** XP
+REP ME IF THIS HELPED!
PLEASE POST THIS ON ALL FORUMS, WE HELP EVERYONE GET ON RAKION