For HIV infected people, control of HIV infection is best achieved by adhering to the highly active antiretroviral therapy (HAART) regimen prescribed by their doctors. Poor adherence to a HAART regimen leads to clinical failure and the development of resistance. Many HIV infected adolescents have difficulty adhering to their prescribed anti-HIV regimens or OI prophylaxis; often, they cite forgetting to take their medications as the reason for poor adherence. This is a pilot study of using DOT and assessing adherence during DOT in HIV infected adolescents who have had difficulty adhering to HAART regimens in the past. The purpose of this study is to evaluate the efficacy in increasing patient adherence and the feasibility of using DOT among HIV infected adolescents.