I must display the sub pages of the sub page menu only, i am presently by using this snippet of code and never sure how you can change it out to obtain the preferred result.

<div class="sub-content">
    <?php while(have_posts()) : the_post(); ?>

    <?php   
        global $post; $thispage = $post->ID; // grabs the current post id from global and then assigns it to $thispage
        $pagekids = get_pages("child_of=".$thispage."&sort_column=menu_order"); // gets a list of pages that are sub pages of $thispage and assigns it to $pagekids
        ?>
        <?php if ($pagekids) { // if there are any values stored in $pagekids, meaning there are sub-pages of the current page ?>

            <!-- Style Sub-Page Navigation -->
            <ul id="subNav">
                <?php wp_list_pages("depth=0&title_li=&sort_column=menu_order&child_of=".$thispage); // display ONLY the sub pages of the current page ?>
            </ul>
            <!-- End Style Sub-Page Navigation -->

    <?php } else { // $pagekids is empty ?>

            <ul id="subNav">
                <li><?php wp_list_pages('depth=0&title_li=&child_of='.$post->post_parent.'&sort_column=menu_order'); ?> </li>
                <!--  // display the sub-pages of the current parent page  -->
            </ul>
    <?php } ?>

        <h1><?php the_title(); ?></h1>

        <?php the_content('title'); ?>

        <?php endwhile; ?>

        <?php else: ?>

    <h2>Sorry! This page is currently unavailable, please check back later!</h2>
    <?php endif; ?> 
    </div>

</div>