wp_list_pages Customization?

Hi,

I’m working on trying to display a list of my pages using the wp_list_pages function. Instead of showing the title of the page, I want to display the value of the meta_key for that page. I hacked the classes.php file a little bit to get the stylings I want, but I can’t figure out how to get it to display the custom field. Here’s my current code from the classes.php file:

$output .= $indent . ‘ID) . ‘” title=”‘ . attribute_escape(apply_filters(‘the_title’, $page->post_title)) . ‘”>’ . ‘<div class=”left-links”>’ . ‘<img src=”px/small_link.png” border=”0″>’ . ‘ ‘ . apply_filters(‘the_title’, $page->post_title) . ‘</div>’ . ‘‘;

Any ideas or suggestions will be greatly appreciated. Thanks in advance.

-groq