 All subjects will be assessed regarding substance use and consequences, HIV risk behaviors, costs, healthcare utilization and receipt of substance dependence treatment. The primary outcome is drug use at 6 months; secondary outcomes are drug use consequences, including HIV risk behaviors, and receipt of substance dependence treatment among those with dependence. We hypothesize that the standard BI and the enhanced BI will each have greater efficacy than screening and resource information alone for decreasing drug use, decreasing drug use consequences and HIV risk behaviors and increasing receipt of treatment for those with dependence. 