I currenlty have a .net solution with multiple project within it. I am using Microsoft.Xrm.Sdk to connect up to dynamics on. as an example i am using version 7 of the dll in my solution, in various difffernt projects within the solution. I would like to know, if based on a app setting or config setting i would be able to toggle between version 7 and version 9. having the various dll's in the same bin