Never mind! I just noticed from reading the rules that they'll know if you're an instant winner if you hit it at the predetermined time. The code is apparently to just get you into the store.
b. Scrambled Image Game: After you play the photo shuffle game you automatically will be taken to your Scrambled Image Game online game piece (the Game Piece). Your Game Piece must be printed before exiting the Scrambled Image Game for proof of eligibility. You can bring the printed Game Piece to a participating retail store during store hours before September 20, 2008 to find out if youve won. All potential winners of a Scrambled Image Game prize will be notified by email approximately 4 (four) days after his/her winning game play. Administrator is responsible for the functionality of the Scrambled Image Game. Possession of the Game Piece itself is not determinative of a potential win; it is the random, computer-generated winning time that indicates a potential winner.