I am doing the walk also! Wish I could help you out with flyers but well I suck at photoshop. Have you thought of doing a video announcement and putting it on youtube?
Anyway, to support us please go to walk.jdrf.org My team name is Raina calls the shots. And for those who don't know, JDRF is the Juvenile Diabetes Research Foundation. The walk is this Saturday at 1:00 for those that wish to join us.