A prototype corporate version of SIGI PLUS a computer-based career guidance system, was developed by the Educational Testing Service (ETS) to serve the career counseling needs of adults in companies. It included a large store of nationally applicable occupational information that could be readily linked online to employer-provided company information. All information was integrated into a structure covering the process of career choice. The prototype system was field-tested at ETS. To expand the customizing options of the generic version, ETS programmed sections of the corporate version to enable users to select a SIGI PLUS occupational title and then see the full list of corporate jobs subsumed under the title and to make users aware of which occupations are linked to company jobs. Evaluation participants (66 ETS employees) completed two questionnaires, one administered both before and after use of SIGI PLUS and one only after use, and then used SIGI PLUS. In general, participants liked SIGI PLUS and found it useful either in confirming present career plans or suggesting new ideas. It was helpful in self-assessment, increasing awareness of career opportunities, and developing positive feelings about the future. Ninety percent would recommend the system. Small positive differences in employee attitudes were noted. (Instruments are appended.) (YLB)