http://blogs.technet.com/b/john_westworth/archive/2006/09/01/453309.aspxThe workflow functionality of the Office System 2007 is one of it’s strongest points and David Chappell has written an excellent document on Understanding Workflow in Windows SharePoint Services and the 2007 Microsoft Office System – Nowen-GBTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)