I ran across a great article (http://savij.com/2007/07/31/using-cab-with-devcomponents-ribbon-control/) that shows how to integrate DevComponents UI Ribbon into a CAB (http://www.codeplex.com/smartclient/Wiki/View.aspx?title=Composite%20UI%20Application%20Block&referringTitle=Home) UI!  We need to see more of this from the Patterns & Practices group.  There are so many UI things it is hard to start sometimes.