Integrated Decision-Making Support Systems (IDMSS), are specialized Computer Based Information Systems designed to support all phases of the Decision- Making Process. Full integration of stand-alone components was proposed in the early 90´s and, despite substantial reported benefits above less integrated systems, few of the fully integrated systems have been implemented in practice. We believe that this “implementation paradox” is caused by the lack of a process-oriented perspective to guide the implementation of IDMSS. This tutorial has the goal of offering such a process-oriented approach.