When Community Memorial Hospital selected a computerized Medical Information System (MIS), it was recognized that physician use and acceptance was paramount to success. To achieve this, active participation from the medical-dental staff via an advisory committee, system education and emphasis on physician benefits was sought. Advance preparation included selection of light pen technology, field trips by selected physicians to other hospitals with the same system, and strategic placement and availability of terminals. During implementation, training was scheduled at the convenience of the physician. This training continues to be offered immediately to new physicians as they join the staff. System upgrades and added functions prompt scheduling of demonstrations for interested physicians. Many developmental ideas come from physicians using MIS indicating their interest in maintaining the system. New approaches that will make order entry easier for physicians so that everyone can benefit from their cooperation and participation are continually being looked for.