[HELP] Players can't find server

I make Gunz server (Kekku's), setup all files, so it's work perfect (game, registration etc.).. but ONLY for me.. Players, when run a game, don't seem my "Match Server" in the login.. Lools like launcher connects to localhost..
Note: IP in config.xml changed to mine, but no effect. I change IP also in system.mrs and update filelist inside.
Maybe I should change IP anything else? Please, help..

do you have a router ?
then try to portforward your ports

if you dont know how to do it visit this site; PortForward.com - Free Help Setting up Your Router or Firewall
i dont know exactly which ports but i think these
6000
8900
and something else

Problem is solved. I hex the exe file and change all "localhost"s to my IP.