Are there still people playing this game online (i.e. Chessmaster 10th Edition)?

If so, how can I do so without a CD key?

And, no, I do not have a "pirated" copy. Unless you are going to accuse OfficeMax of selling pirated software (I don't think the $10 a pop would really be worth the risk for them). I just don't see a CD key anywhere in the packaging or on the CD.