\"Hello,i have installed the patch for connection to server.but what can use nickname and password...is impossible register....\"
Do you mean the gamespylogin? If yes. then its not needed anymore... just klick on a server from the master servberlist which you will find here http://forum.tvare.sk/master.php
and start your game. it will automaticly connect to the server. to change name you can use the way like Zi said or most servers support a !name command for rename :)