The title says it all. Got some workin’ keys?
I think it’s better if you play online, to purchase the original game.
did you buy the retail version of the game?
If you did explain the situation to the game maker and they will issue you a new key. If you are using a backup and want to get online game going you will have problems with a HL key generator since they dont get past the WON authorization. Personally I have 3 valid keys I collected from friends who dont use the game online.