Simple menu question

Hi all

I'm new to struts, my application is using two application resources for 
each language that should administer. I'm trying to include the Menu 
message labels in this resource files. The rest of the application is 
using OK this message resources but can't find a way that struts menus 
includes it. My menu-config.xml is:

<?xml version="1.0" encoding="UTF-8" ?>

<MenuConfig>

  <Displayers>
    <Displayer   name="TabbedMenu"
                 type="net.sf.navigator.displayer.TabbedMenuDisplayer"/>
  </Displayers>

  <Menus>

    <!-- New Menu for Tabbed Displayer -->
    <Menu name="TabbedHome" key="Menu.Home" action="/login" />
    <Menu name="TabbedTit" key="Menu.Art" action="/articulos" />
    <Menu name="TabbedExit" key="Menu.Exit" action="/logoff" />

  </Menus>

</MenuConfig>


In the JSP I've attached bundle, but seems to have no effects, or just 
only using the default application resources without regarding to 
browser language:

<menu:useMenuDisplayer name="TabbedMenu" 
bundle="org.apache.struts.action.MESSAGE">
    <menu:displayMenu name="TabbedHome"/>
    <menu:displayMenu name="TabbedTit" />
    <menu:displayMenu name="TabbedExit"/>
 </menu:useMenuDisplayer>

Thanks a lot for your help.
Emiliano.