If you want to raise funds on your own. You could always ask people to sponsor you in the walk. Or if you really want to have fun, you can turn it into a game. I am a consultant with Thirty-One Gifts. One of the popular things in my area is a Football-Poollike game called squares. You would make a grid of squares and number them from 1-100. You could sell the squares for $10 each. That would total $1000. With Thirty-One it takes $200 to make a "show", so you would pick a number once all the squares are sold. That number would win $200 in products and the other $800 would go to the cause. It is a win win situation, You get $800, the consultant gets credit for a show and the winner gets $200 worth of products.
Check in your area for consultants who might be willing to help you out with this. You might even be able to find a few Direct Sales Consultants who would be willing to help you out. I would love to help you, I have a niece with JRA, so it hits home for me, but I am in NJ.
Let me know if you have any other questions!! I would be more than willing to help you out in any way that I can!!!