They have a "need a code" link right above the entry form.
Grand Prize (80): a $3,000 certificate redeemable towards the purchase of winner’s choice of any available destination travel package offered by Sports Travel and Tours, in the prize theme category selected by winner at time of entry. Grand Prize travel packages may include hotel accommodations, air transportation and, if applicable, event admission ticket(s), and can be customized to winner’s request.
First Prize (480): a $100 Sponsor-specified gift card towards the purchase of items in the prize theme category selected by winner at time of entry.
Daily Entry. Expires September 15, 2012. U.S. Only.