Sandie, I don't know how to start one, but they work great. Handsome Dan's Rescue, over in Cranston, uses them for some of their rescues. Recently Hope, a pittie puppy with terrible mange, had one set up - they got over $3000 in a matter of days.

I've contributed to that one, and it was super easy.

Check out their website - http://www.chipin.com/overview