More extern.php help, please

<?php include('http://www.uscivilwaronline.com/forums/extern.php?action=news&fid=15&summary=yes&show=5'); ?>

//
// Show users online
//
else if ($_GET['action'] == 'online' || $_GET['action'] == 'online_full')
{
    // Load the index.php language file
    require PUN_ROOT.'lang/'.$pun_config['o_default_lang'].'/index.php';
    
    // Fetch users online info and generate strings for output
    $num_guests = $num_users = 0;
    $users = array();
    $result = $db->query('SELECT user_id, ident FROM '.$db->prefix.'online WHERE idle=0 ORDER BY ident', true) or error('Unable to fetch online list', __FILE__, __LINE__, $db->error());

    while ($pun_user_online = $db->fetch_assoc($result))
    {
        if ($pun_user_online['user_id'] > 1)
        {
            $users[] = '<a href="'.$pun_config['o_base_url'].'/profile.php?id='.$pun_user_online['user_id'].'">'.pun_htmlspecialchars($pun_user_online['ident']).'</a>';
            ++$num_users;
        }
        else
            ++$num_guests;
    }

    echo '<li>'.$lang_index['Guests online'].': '.$num_guests.'</li>';

    if ($_GET['action'] == 'online_full')
        echo '<li>'.$lang_index['Users online'].': '.implode(', ', $users).'</li>';
    else
        echo '<li>'.$lang_index['Users online'].': '.$num_users.'</li>';

    return;
}


//
// Show board statistics
//
else if ($_GET['action'] == 'stats')
{
    // Load the index.php language file
    require PUN_ROOT.'lang/'.$pun_config['o_default_lang'].'/index.php';

    // Collect some statistics from the database
    $result = $db->query('SELECT COUNT(id)-1 FROM '.$db->prefix.'users') or error('Unable to fetch total user count', __FILE__, __LINE__, $db->error());
    $stats['total_users'] = $db->result($result);

    $result = $db->query('SELECT id, username FROM '.$db->prefix.'users ORDER BY registered DESC LIMIT 1') or error('Unable to fetch newest registered user', __FILE__, __LINE__, $db->error());
    $stats['last_user'] = $db->fetch_assoc($result);

    $result = $db->query('SELECT SUM(num_topics), SUM(num_posts) FROM '.$db->prefix.'forums') or error('Unable to fetch topic/post count', __FILE__, __LINE__, $db->error());
    list($stats['total_topics'], $stats['total_posts']) = $db->fetch_row($result);

    echo '<li>'.$lang_index['No of users'].': '.$stats['total_users'].'</li>';
    echo '<li>'.$lang_index['Newest user'].': <a href="'.$pun_config['o_base_url'].'/profile.php?id='.$stats['last_user']['id'].'">'.pun_htmlspecialchars($stats['last_user']['username']).'</a></li>';
    echo '<li>'.$lang_index['No of topics'].': '.$stats['total_topics'].'</li>';
    echo '<li>'.$lang_index['No of posts'].': '.$stats['total_posts'].'</li>';

    return;
}