MuggleNet reports that both Emma Watson and Tom Felton were present to accept the Best DVD award for Harry Potter and the Chamber of Secrets at the Disney Channel Kids Awards 2003. Both of the actors said they were "very excited."
Disney's Kids Awards webpage notes the following:
Missed the show? Don't worry - You can see it on Saturday @ 5:30pm on the Disney Channel!
Unfortunately, I wasn't able to verify this from any TV listings. If anyone has any more information, or knows if a clip of Emma and Tom accepting the award is available on the internet, please let us know!
Update III: The Kids Awards webpage has now posted the following:
Coming Tuesday! Interviews with Tom Felton and Emma Watson, Busted & more!