Wizards is running a contest right now that seems pretty straight forward.

To quote:
The letter D! o you think you have a great Magic: The Gathering story? Wizards of the Coast wants to hear how Magic is part of your life today. Tell us a true story about Magic, and the most creative, unique, and relevant one will win a trip to Pro Tour–San Juan, May 27-30, 2010.

Go here for more details.