Multimedia can significantly improve education, but only to the extent that their impact is perceived and planned for. Planning mig t be accomplished in a comprehensive, multimedia development laboratory, organized around methodology and functions rather than equipment or facilities. Such a laboratory might plan, supervise, evaluate, and influence the implementation of complete educational systems making optimum use of multimedia and telemedia in an integrated and continuous manner. Of possible simulation laboratories, a semi-manual computer-based laboratory might be the most effective, but its main contribution would be as a research vehicle; it would not bring about major changes. The methodology of this study consisted of seeking expert opinions, visits to innovative installations, and a review of the multimedia state-of-the-art. No experiments were undertaken, nor was a prototype laboratory built or tested. Annual cost of a comprehensive, multimedia development laboratory is roughly estimated at $2,000,000. It is recommended that the Commission on Instructional Technology favorably consider the feasibility of such a laboratory. A bibliography and descriptions of various operations presently making use of multimedia are appended. (GC/MF)