Today's dynamic manufacturing environment demands the information models that CIM applications rely on to be robust to frequent changes, including the acquisition and dismissal of manufacturing resources. The object-oriented paradigm, which models the real world in terms of objects, is ideal for a manufacturing resource model due to its properties of modularity and encapsulation. In this report, a methodology is proposed for the systematic creations of an object-oriented resource model. A prototype information model representing the manufacturing environment is presented and mapped into a relational database for data storage, and an application is shown for the manipulation of a modular resource model database. The functionality of this application is demonstrated with an interface to an ARENA simulation model. The potential for this model to interact with other CIM applications, including process planning, production planning, CAD, and SFCS is discussed. This pioneers the new areas of e-simulation to rapidly configurable manufacturing facilities to ensure the anticipated performance.