I Lost BF 2 CD key but remember login information to EA account.

I lost my Cd key from my Battlefield 2 but I remember the account login and pasword that I created in this game. Can you help me recover my cd key or help me add my BF 2 to my current origin account?  The email I used with my ea account in BF 2 is the same as I have now - [edit: email address removed]