http://www.colgate.com/app/HealthyHabits/US/EN_v2/SignUp.wsp
I had actually already done this from a previous post, but they mailed me the wrong toothbrushes and at the advice of Leigh I contacted them , they sent me a nice letter telling me that they were sorry and that they appriciated my involvement in the promotion. They also sent me 3 coupons for free toothbrushes and an enevelope full of regular cents off coupons for various colgate and palmolive products