This paper details an Air Force sponsored project known as Isoperformance. Isoperformance (iso meaning same) is a conceptual approach to human factors engineering. The focus of isoperformance is that the same level of performance can be attained by different combinations of personnel, training, and equipment. This goal is, once these combinations have been determined, a choice among them can be made in terms of maximum feasibility or minimum cost. The program takes into account human engineering, personnel, and training research. The specific focus of this paper will be the interactive computer program. Input to the isoperformance program, made by the user, includes the system, the task, a quantified definition of proficient performance as well as other specifications.