Any time you modify the source code of the framework within the MicroFour StrataFrame.sln solution and build the solution, the DLLs are automatically moved into the GAC. So, all you have to do is build the solution and an after build task will take care of the rest. It's probably best if you close all of your open Visual Studios other than the one you're using to build the framework. After that, restart VS and you can be sure that you'll be using the modified DLLs.