How can I put a second menu?

Hi,

I´d like to put a second menu on my top bar with different items, like offers and promos. The problem is if I a create a new page using the Menu Page template, the content of this new page is the same of my main Menu.

Here´s the example http://donpollovigo.com/?page_id=152 (The problem is between “Nuestra Carta” and “Te Recomendamos”

Somebody Knows how to do it?

Sorry for my English!