I hope you don't think people are ignoring your question, but I suspect that you might get helpful replies if you 1) post more exact information on which edition you purchased and 2) possibly post in the technical help section.
If you bought a new copy of the game that was somehow missing the booklet with the CD key printed inside the cover, you might have to contact Atari support about getting a CD key. Other people on the forum wouldn't be able to tell you their key without potentially losing the ability to play online.
