Cannot import Windows ADK to DS

My environment is that we have a server farm on one side of the country where the Notification Server lives.  The Site Server is on the other side of the country where the users live.  I have succesfully installed all the NBS server components on the Site Server and it is listening as it should be.  I am now trying to create the PreBoot Environment.  I have installed Windows ADK locally as asked, but cannot import this to the newly created DS.  Does anyone have any suggestions?