Implementation is arguably the most crucial and difficult stage of any ERP development project. An organization's transition between legacy and enterprise systems can proceed smoothly, according to plan, or result in the disastrous consequences of an undefined approach. Jackson Laboratories' ERP success story stands testament to the value of an established strategy; a project which lead to improved profits and various tangible measures of success - the end goals of every ERP implementation. Increased efficiency, customer base growth, and improved business processes can all be quantified through the use of performance metrics when appropriately employed, both before and after deployment. These attributes, in concert with the final aspect of a formal change control policy, can lead to a successful and profitable ERP implementation; benefitting users, stakeholders, analysts and vendors alike.