OMFg - u have to do 3 simple things ...
1) go to run in startmenu and type regedit
look for a previously saved tab called valve( if u have installed a valve
exe b4 hand) and open it. then look for a cfg called ..
( your ip adress:cd key:port ) edit it by changing the target from the
previous version to the CZ target
2) open the exe
3) it will ask for a cd key : type the one you previously had