Zonekiller

I can't connect to any zone. When i start the game client (3.9) the zone names are red and there is no ping or an ping of 100.0. I know that the game has no connection but why. I think the problem is our Firewall but the only problem is: how can i come across the firewall what are the proxy settings i have to use. I hope you guys know the solution because 2 friends have the game and when i played it i liked it very well. (sorry for my bad English. I'm Dutch )