With the issuance of DoD Instructions 5000.1 and 5000.2 in February, 1991, the DoD radically changed the way it addresses Human issues in system acquisition. A new concept called Human Systems Integration (HSI) encompasses the integration of manpower, personnel, training, human factors engineering, system safety, and health hazard concerns. In the wake of the DoD directives establishing the requirements for HSI, the need is for a standardized and formalized approach to HSI implementation. Tools and methods to implement this approach are also needed. This paper describes a set of automated tools to meet this need, designated the HSI Integrated Decision/Engineering Aid or IDEA.