Show a different menu?

I'm trying to get Nelo to use a different menu, but it keeps hiding it.

I just need to add this to show the menu on any other theme:

<?php uberMenu_easyIntegrate(); ?>

I've tried replacing the current code in the header for the menu, but it doesn't replace the menu but seems to become a part of it.
This one is really doing my head in, and I'd appreciate any help getting it to show.

Thanks.