Seven components of an authoring system for interactive computer-assisted instruction are described: (1) hardware, including a microcomputer, monitors, and a videodisc player; (2) videodiscs purchased for "repurposing," i.e., using frames of clips from the videodisc to illustrate the instructional program; (3) program options for the instructor; (4) the levels of questioning that can be used; (5) program options for the student; (6) output files which collect and profile the instructor's strategy and student responses; and (7) a manual for the student-author to use in preparing an interactive computer-assisted instruction module using the videodisc. Brief descriptions are provided of the users of the system, who are primarily graduate and undergraduate education students at Wayne State University (Michigan), and some general impressions of the system conclude this paper. Appendixes contain diagrams of system components, menu options, sample file profiles, and representative analyses of student response data. (MES)