how do i get a bring down the sky cd-key

See the pinned [SOLVED] post.  (2nd one at the top of this forum. 😕mileywink: )

Alternatively, you can (should?) use the EA Customer Support Channels (http://help.ea.com).

All issues regarding accounts and game activation codes really should be resolved by them. 

Look for the "Get Back in the Game" link on the right-hand side of the page.