Comprehensive enrollment management (CEM) ensures that academic, student, and fiscal planning are done in concert in order to acknowledge the turbulence confronting an institution. A four-phase model of CEM has been developed that can be replicated at any college or university. In phase 1 of the model, the past 25 years of institutional enrollment patterns are "explained" through an examination of major tuition, fee, and financial aid policies; service area demographics and economics; and college budget, staffing, and curriculum. In phase 2, the model is modified to forecast future enrollments, while phase 3 involves connecting the forecast to a simulation model to determine possible results from college policies related to marketing, outreach, admissions, registration, and other efforts affecting first-time enrollments. Phase 4 then integrates enrollment management into a model of the entire institution to determine the effect of the enrollment management simulations on the institution's curriculum and budget. The following overheads from a demonstration of the model are attached: (1) a session outline; (2) the benefits of using models; (3) useful factors and methods for "explaining" enrollments; (4) enrollment forecasts through 2005 for Arizona's Maricopa County Community College District; (5) sample input and output measures for managing and adjusting enrollments; (6) and a sample database, planning variables, and simulations and scenarios for a fictitious college. (HAA)