Go to:
http://clients.eprize.net/delta/jfk/index....e_id=&noflash=0

and register and play the game.

Then receive email stating:
"Delta Bonus Mile Terms & Conditions Bonus Offer: Earn a one-time, 2,000 mile bonus for purchase on delta.com. Promotion Period: Purchase must occur on delta.com between June 10 and October 31, 2004. No other purchase channels qualify. Eligibility: Offer is nontransferable and is valid for SkyMiles® members who are U.S. residents. Miscellaneous: All standard Delta SkyMiles program rules and conditions apply. This SkyMiles offer is subject to change or withdrawal with 30 days advance notice. The 2,000 bonus miles will be credited to your SkyMiles account four to six weeks after promotion has ended. This is in addition to the 1,000 miles customer is eligible to earn for purchase and fly booking on delta.com (awarded separately). © 2004 Delta Air Lines, Inc. "

credit to jilly.