i need servers to connect

i have installed the game with a cd key i downloaded from the internt.. it works, but now i need some server to play, who knows one?? i don`t know if this works whit or without won

you wont be able to play online with a cd key from the internet concidering there are about 1000 other people trying to use it and only one of you can use it at a time. Just go out and BUY hl concidering it is only $20.