I'd like to specify which page used and display all of it's children as a main navigation bar on my website.

I'm trying to create an "Admin" view with all pages inside my "SITEADMIN" page where i'm adding all the pages that should be visible in this tree.

By using: <dnn:MENU ID="MENU1" MenuStyle="Menus/MainMenu" runat="server"></dnn:MENU>

I'm always getting the root level. How can I specify which page to load rather than the root?