The study features activities that include development and refinement of a culturally-specific cognitive behavioral therapy that integrates aspects of drug abuse treatment with HIV medication adherence interventions and cultural elements of being a gay or bisexual man receiving medical care for HIV/AIDS. To estimate the size of the signal of this intervention, the study proposes a two parallel group design in which 50 treatment-seeking HIV-seropositive gay and bisexual men who meet criteria for methamphetamine abuse and who receive HIV medical care at the UCLA Center for Clinical AIDS Research and Education (CARE) clinic are randomized to the study condition or a treatment-as-usual (TAU) condition. Participants assigned to the experimental condition receive 12 weeks of twice-weekly GCBT, with a 6-months post-randomization follow-up visit. Participants assigned to the TAU condition are referred to the UCLA Addiction Medicine Clinic (AMC), where they receive the clinic's standard of care treatment for methamphetamine dependence for 12 weeks, and return for a 6-month follow-up visit. Analyses are conducted on all participants who meet inclusion/exclusion criteria, express desire for treatment, and receive at least one "dose" of the cognitive-behavioral treatment or make one visit to the AMC. Participants in both conditions agree to weekly and monthly data collection visits, including the provision of urine samples. Primary outcome variables are methamphetamine use, sexual risk behaviors, and HIV medication compliance. The proposed design maintains the focus on intervention development and feasibility, while recognizing that the second phase of this development will be informed by having accurate estimates of effect sizes for the intervention and adequate resources to conduct the full-scale trial.