 Efforts to help syringe exchange registrants employ additional HIV risk reduction strategies are often thwarted by strong social networks that reinforce substance use and other risky injection use and sexual behaviors. The proposed study addresses this important problem by evaluating the feasibility and efficacy of a novel Community Supported Risk Reduction group. This structured intervention works with injection drug users and at least one drug-free family or friend to mobilize social support, teach HIV risk reduction skills, develop treatment readiness, and support participation in community activities designed to expand drug-free social networks. 