In this project, we plan to develop and evaluate the acceptability and preliminary efficacy of a web-based, skills training program for adolescents with substance use disorders. The content of this program will be based in a model of psychosocial substance abuse treatment for youth that has been shown to be effective in prior scientific research. It will be provided via an interactive, delivery system that employs informational technologies that are effective in promoting relevant knowledge and skills. Adolescents in substance abuse treatment will help shape the development of this program. To our knowledge, the planned program will be the first interactive program to provide comprehensive, psychosocial substance abuse treatment to adolescents via computer-based technology.