Early career development computer systems were rich in theoretical base and took advantage of the computer's ability to store and process a large amount of information. Two types of computer-based systems exist today: guidance systems which help students learn about themselves on-line and information systems which provide search strategies through occupational and educational files. A field study with the systematic career guidance system DISCOVER was conducted in a college placement center in an attempt to evaluate the effectiveness of computer-assisted guidance within a comprehensive career counseling service of a large university. Students (N=67) with career-related concerns were randomly assigned to one of four groups, each with a different treatment: (1) individual counseling only; (2) individual counseling and DISCOVER: (3) DISCOVER alone; and ($) no treatment. Subjects completed the survey of Career Development, the Confidence and Progress in Educational/Career Planning Questionnaire, and the Career Development Inventory, and kept a behavior log. These four measures of self-rated progress in educational/vocational planning together yielded 14 scores. The trends of the findings suggest that all three treatments produced positive effects, that DISCOVER alone and individual counseling alone were equivalent in their effects as treatment modalities, and that DISCOVER combined with individual counseling produced the most positive effects. (ABL)