Sounds like a game? One of the goals for the WCF/WF teams was to integrate WCF and WF more closely in Orcas Beta 2. This project was names Silver. Once you really start using WF, sooner or later you would find it useful to instantiate a workflow using a WCF service. Well, in beta 2 this is now possible. Matt Winkle wrote an excellent blog post about Workflow Services ( http://blogs.msdn.com/mwinkle/archive/2007/07/30/vs-2008-beta-2-shipped-0-to-workflow-service-in-60-seconds.aspx ) If you need more...