Thanks Anders, I went through the tutorial about creating your own skin so and have the MyNewSkin - 1 column selected for my homepage. Modified the ASCX in this file so it uses the DDRMenuNavigationProvider. After doing this, the sub-menus do not display when I hover over the menu options.
I tried to fix this by adding:
<CustomAttributes>
<dnn:CustomAttribute Name="NodeSelector" Value="*,0,3" />
</CustomAttributes>
But the sub-menus still don't pop up. If I switch back to DNNMenuNavigationProvider the sub-menus display. Is there some option I am missing in the DDR menu that is preventing the sub-menus from popping up?