How to display RSS Feeds on the homepage

<?php
$newsid = '4'; // Forum id to fetch the news from ( only supports 1 forum id )
$newsdisplay = '5'; // Number of news to display.

?>

<?php
require_once PUN_ROOT.'include/parser.php';

?>




<?
$result = $db->query('SELECT t.id, t.subject, t.num_replies, t.last_post, t.last_post_id, t.last_poster, t.num_views, t.forum_id, p.poster, p.poster_id, p.message, p.hide_smilies, p.posted, g.g_title, f.forum_name FROM '.$db->prefix.'topics AS t INNER JOIN '.$db->prefix.'posts AS p ON p.topic_id=t.id AND p.posted=t.posted INNER JOIN '.$db->prefix.'users AS u ON u.id=p.poster_id LEFT JOIN '.$db->prefix.'groups AS g ON g.g_id=u.group_id INNER JOIN '.$db->prefix.'forums AS f ON f.id=t.forum_id WHERE t.forum_id='.$newsid.' AND t.moved_to IS NULL AND f.redirect_url IS NULL ORDER BY t.posted DESC LIMIT '.$newsdisplay) or error('Unable to fetch announcements', __FILE__, __LINE__, $db->error());

if ($db->num_rows($result))
                    {
                            while($cur_post = $db->fetch_assoc($result))
                            {
                                    $cur_post['message'] = parse_message($cur_post['message'], $cur_post['hide_smilies']);
?>
<div class="block">
<?
echo "\t\t\t\t\t\t\t".' <h2><span>'.pun_htmlspecialchars($cur_post['subject']).'</span></h2>'."\n";
?>
<div class="box">
                <div class="inbox">
                    <p>

<ul>

<?php echo $cur_post['message']."\n" ?><br />


<?
echo "\t\t\t\t\t\t\t".'<a style="text-decoration: none" href="viewtopic.php?id='.$cur_post['id'].'" class="username">'.pun_htmlspecialchars($lang_portal['Visit_Topic']).'</a>'."\n";
?>





</ul>
</p>
      </div>
            </div>
        </div>

<?
}
 }
else
{

 }    
?>

</p>

$username = iconv( $feed->get_encoding(), $lang_common['lang_encoding'], $username );