This publication is primarily a progress report on the implementation of the International Arrestee Drug Abuse Monitoring (I-ADAM) program in eight countries and on the challenges they faced. Although some research findings are presented, the principal purpose of this report is to describe the experiences of the countries as they engaged in the process of launching I-ADAM, which is an outgrowth and extension of the Arrestee Drug Abuse Monitoring (ADAM) program, developed and operated by the National Institute of Justice, U.S. Department of Justice. ADAM tracks trends in the prevalence and types of hardcore drug use--such as cocaine, heroin, marijuana, and methamphetamine--among booked arrestees.