Adolescents in mental health treatment are at greater risk for HIV and other STIs than their peers due to an earlier age of onset of sex, less protected sex, more sexual partners, and more frequent substance use. The numerous adolescents who receive mental health treatment do so in a variety of settings such as day hospital programs, therapeutic schools and residential centers. These programs offer a variety of health services but there is no efficacious HIV prevention program specifically tailored for the issues of youth in mental health treatment, other than the one described in this project. STAR ("Safe Thinking and Affect Regulation"). The goal of this SBIR (Small Business Innovation Research) Fast-Track project is to transform STAR into an engaging digital, multimedia format, Digital STAR (D*STAR), for easy and reliable use by care agencies that serve adolescents in mental health treatment. To transform this intervention, Virtually Better, a company with a successful history of production and distribution of cutting-edge technological interventions, has teamed with the research developers of STAR at Rhode Island Hospital and Brown University. During the two phases of this Fast-Track project, digital session development will be accomplished by an iterative process of feedback and refinement between Virtually Better, the developers of STAR, adolescents in mental health treatment, and a Community Advisory Board.