How to bind dynamically menus and submenus in silverlight 4

Question

Hi,

    I need to good solution to bind Menus and its Sub Menus Dynamically in Silver Light4. I searched but cant find the exact one. Please help.
 
                    I got a List that contains Menus, Sub Menus. I need to Split it which is root Menu and its Sub Menus.


Thanks,
Vijay