Plz Help Me!!

[Hannibal Barca2]

When I tried to play Online Medieval; TW2, it pops up a message whichs says "invalid CD-key".

I has created an account at gamespy, but it wont work!

Does I have to register my game somewhere??:help:

[Quillan]

Where did you get your copy of the game? Are you certain you typed in the CD key correctly?