PHP and wordpress: Sorting Menu items

I'm working on a wordpress site, customizing the menu. I'm no php whiz, and I want the menu to sort according to the numerical order, not desc alphabetically.

<div id="navigation">
  <ul> 
  <?php wp_list_pages('sort_column=post_title&sort_order=desc&title_li=&depth=1&am开发者_运维技巧p;')?>
  </ul> 
</div><!-- end id:navigation -->

Any ideas how I do this? I've tried editing the above code, but I just lose the menu altogether.

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Try this:

wp_list_pages('sort_column=ID&sort_order=desc&title_li=&depth=1&');

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Also consider using WordPress 3.0 new Menu feature ... this would allow the admin to create a custom menu, sort it via drag and drop and in your theme/page you can call a wp_nav_menu function to display the menu.