Phase III - Conduct a pilot randomized clinical trial comparing outcomes of clients whose counselors were randomized to Clinical Alerts + CBI to those of clients whose counselors were assigned to TAU (control condition). The primary hypothesis is that clients who evidence a High Risk for attrition will have longer lengths of stay in the Clinical Alerts + CBI condition than High Risk clients in the control condition. Secondary client hypotheses are that High Risk clients in the Clinical Alert + CBI condition will attend more treatment sessions, have more drug-free urine results, and receive more ancillary services than High Risk clients in the control condition.