I took a look a the site listed below and it is great.  Lots of great information for your preteen and teen patients.

Colorado clinic hosts sex education Web site for teens
The Boulder Valley Women's Health Center has launched a Web site, teenclinic.org, to give teens and parents reliable information on STDs, contraception and more. The Colorado center also has a mySpace page and an anonymous text message hotline so teens can submit questions to health care workers. 

Broomfield Enterprise (Colo.) (10/7)