Convert Project from Prism Unity Container to MEF

This is a technical project where a software architecture is to be converted from using the Unity Container that is contained in Prism to using the MEF framework. The scope of this project is limited to converting the Modules to be used into MEF components. This shouldn't be too complex of a task. The MEF libraries will have to be added to a pre-existing Visual Studio 2010 project, the modules (about 6 of them) have to have the MEF attributes added to them and the module loading process will have to be changed from using a Prism mechanism to a MEF based mechanism where the MEF parts are loaded from a local file directory.