With WP Main Menu you can create a great menu with links to categories, pages, posts, tags and more for WordPress. Currently WP Main Menu is a Beta, so you may find some bugs. If you found an error, please, report it immediately in this page.
To show the menu, add this code in your theme:
<?php wp_main_menu(); ?>
WP Main Menu won’t be updated anymore because WordPress 3.0 includes a menu manager. Thank you very much for using WP Main Menu and sorry for the inconvenience.