For all who dont know the program HLSW, here is it.
Here is the download link http://hlsw.org/hlsw/download/
and here is a wiki about it http://wiki.hlsw.net/index.php/Main_Page
i explain it short. Its a Program where you see infos about gameservers.
Add your server ip in this program.
Then add your game under settings (doubleclick on the game you want to add, set the path, done).
Now you do a rightclick on the server you want play on it and choose connect.
For Serveradmins its a usefull tool too. You can work there with rcon console in the most of all popular games. Change maps etc... read more in the wiki of hlsw.