MFC Wizard Doc/View Architecture and Navigation Pane

I have two questions:

1. Why does the inclusion of the Navigation Pane in the advanced features of the MFC Application Wizard require that Doc/View architecture be specified? The Navigation Pane (and other advanced features) are greyed when Doc/View architecture are off.
2. Given that the above is true, can anyone point me to example code which places a CMFCShellTreeCtrl on an SDI window without Doc/View architecture?

Thanks!