This study investigates use of computer simulation for teaching ATM use to adults with intellectual disabilities. ATM-SIM is a computer-based trainer used for teaching individuals with intellectual disabilities how to use an automated teller machine (ATM) to access their personal bank accounts. In the pilot evaluation, a prototype system was developed and used to train nine adults with intellectual disabilities how to use a local ATM. Participants were pre-tested on their ability to use an ATM and then were trained using the ATM-SIM prototype. After a brief training period, participants were again tested on their capacity to operate the actual ATM. Results demonstrate preliminary evidence that computer simulation can be used effectively to teach a specific independent living skill to adults with mental retardation. Participants required significantly fewer help prompts and made fewer errors when operating the real ATM after ATM-SIM training. Potential for electronic and information technologies to promote community inclusion was discussed. (Contains 1 figure.)