Delta SkyMiles members can earn up to 2,000 miles when staying one or more nights at any Hilton Worldwide property through March 31, 2011. Members who register for the promotion will earn 1,000 miles after completing a one-night stay (200 miles for stays at Hampton and Homewood), 1,500 miles after a two-night stay (300 miles for stays at Hampton and Homewood) and 2,000 miles after a stay of three nights or more (400 miles for stays at Hampton and Homewood). To be eligible, you must select Delta Air Lines as your earning partner and register at http://www.hhonors.com/moreskymiles before booking your first stay. This offer may be combined with other Hilton HHonors offers and promotions and you can earn miles for multiple stays.