This paper proposes an extended and holistic model of e-government effectiveness and user factors in the areas of technology acceptance model, contingency theory, and general systems theory used as the basis for the development of the 'Rocket Model' to demonstrate how e-government initiatives can be effective. The model is validated using two methods: (1) well established theories and (2) the five component model of an information system. A quantitative tool based on weighted scores is also used to assess the model and demonstrate its usefulness for best practices.