Today, most of the manufacturing execution systems (MES) are large, monolithic, insufficiently configurable and difficult to modify. Using a distributed object-oriented technique, we present a systematic approach to develop a computer-integrated MES framework which is open, modularised, distributed, configurable, interoperable, collaborative, and maintainable. The CORBA infrastructure is adopted to develop this integratable MES. We also use OLE automation and COM objects to construct sample applications. An example is shown to demonstrate the fruit of this systematic approach.