This paper describes the outcome of a research project undertaken for the government of the State of Sarawak in E. Malaysia. A system dynamics model was constructed so as to inform the State’s future economic and social planning to 2020. Positive engagement with State government officials at the highest levels was a feature of the successful completion of the work. A flexible policy evaluation tool for use in their macro-economic planning is now available to be used by those officers who were exposed to several training sessions in system dynamics modelling.