The initial release of TFS did not support having offline clients – meaning it did not support clients that could not connect to the server.  This introduced quite a few problems for folks would might work from home or on the train.  With VS 2008 SP1 (I believe) offline support was partially supported but it required that you use the TFS Power Tools.  With TFS 2010 it is getting a little easier.  Recently I had the need to work offline and I wanted to share the process with others who might be going down this same road because it is not quite obvious.