exclude code

<!– navigation START –>
<div id=”navigation”>
<ul id=”menus”>
<li class=”<?php echo($home_menu); ?>”>” href=”<?php echo get_settings(‘home’); ?>/”><?php _e(‘Home’, ‘inove’); ?>
<?php wp_list_pages(‘depth=2&title_li=0&sort_column=menu_order’); ?>

the above is the code found in the iNove theme header.php. I need to edit it so that it does not add tabs for each page and its child page. Every time i add a child page, it adds it to the nav bar at the top of my theme and i cant use it because i have about 9 pages right now. It makes the theme way to messy. But im no coder and have no idea what to search for to edit the nav menu to display only 8 pages and do not include child pages.

thanx.
I hope that is the right php file to edit
Matt Thomas