As you may know I had some computer problems causing me to delete my main partition of my HD which I had HalfLife installed on, I recently had to reinstall it but heres the thing, I lost the piece of paper which I wrote the CD Key of the game which I purchased. I had to use a key I found in a generator so I can play the single player game on it but I wonder, is it possible for me to play Half Life online with the generator key?