Here is some info from the Walmart website. sounds like it could be fun!
Dora’s 10th Birthday Celebration Event
Dates: 8/14/2010 - 8/14/2010
Nothing is bigger in a preschooler’s life than their birthday —- now, one of their favorite friends is celebrating a birthday at Walmart! Children and adults are invited to the ultimate birthday party in-store. When Dora’s friends arrive at Walmart they are invited to join the adventure at the Bright Ideas event station in Toys, where they will get party favors like cupcakes and a free photo print with Dora in her special birthday dress. Schedule this event on your calendar today and check out the Dora Birthday Doll Exclusive at Walmart.