One hundred seventeen administrators, users of both batch process and online computer systems at a major university, responded to a questionnaire designed to discover attitudes toward the quality of the system and services, the users' evaluation of the service, and the relationship of these attitudes with voluntary use of the system. These attitude, evaluation, and use factors were considered in relation to the actual quality of the system as rated independently by the information services department staff. Data were collected on input-output quality; adequacy of training; management support; quality and kinds of reports generated; input error ratings; usefulness; accuracy; timeliness, flexibility; completeness; and pressure to reprogram the system. Step-wise multiple regression was used to analyze the data, which did show an association between actual quality of systems, and quality as perceived by users, with favorable user attitude. These favorable attitudes and evaluations were also positively associated with system usage. Further, increased voluntary use may be predicted by favorable attitudes, which provides good reasons for information services to develop high quality systems and favorable user attitudes. (LS)