How can i edit something ...

    $visit_elements['<!-- forum_welcome -->'] = '<p id="welcome"><span>'.sprintf($lang_common['Logged in as'], '<strong>'.forum_htmlencode($forum_user['username']).'</strong>').'</span></p>';

    $visit_elements['<!-- forum_welcome -->'] = '<p id="welcome"><span>'.sprintf($lang_common['Logged in as'], '<strong><a href="'.forum_link($forum_url['user'], $forum_user['id']).'">'.forum_htmlencode($forum_user['username']).'</a></strong>').'</span></p>';

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE extension SYSTEM "ext-1.0.dtd">

<extension engine="1.0">
    <id>linked_visitlink</id>
    <title>Linked visitlink</title>
    <version>0.12</version>
    <description>Linked username on visitlinks.</description>
    <author>Kushi</author>
    <minversion>1.4</minversion>
    <maxtestedon>1.4.2</maxtestedon>
    <hooks>
            <hook id="hd_visit_elements"><![CDATA[
if ($forum_user['is_guest'])
    $visit_elements['<!-- forum_welcome -->'] = '<p id="welcome"><span>'.$lang_common['Not logged in'].'</span> <span>'.$lang_common['Login nag'].'</span></p>';
else
    $visit_elements['<!-- forum_welcome -->'] = '<p id="welcome"><span>'.sprintf($lang_common['Logged in as'], '<strong><a href="'.forum_link($forum_url['user'], $forum_user['id']).'">'.forum_htmlencode($forum_user['username']).'</a></strong>').'</span></p>';
            ]]></hook>
    </hooks>
</extension>

#brd-crumbs-top .crumblast {
font-size: 1em;
}
#brd-crumbs-top .crumblast a{
color: #00579C !important;
}
#brd-crumbs-top .crumblast a:hover{
color: #CD0021 !important;
}

<?php

/* Скрипт за вземане на Последни теми от PunBB */

/* config */
$prefix = "pun";
$limit = "10";
/* end of config */

require("config.php");

$connect = mysql_connect($db_host, $db_username, $db_password);
mysql_select_db($db_name, $connect);

$result = mysql_query("SELECT id,posted,poster,subject FROM ".$prefix."_topics order by posted desc limit $limit");
 while ($row = mysql_fetch_array($result)) {
 $tid = $row['id'];
 $date = date("d.m.Y",$row['posted']);
 $poster = $row['poster'];
 $title = $row['subject'];
 echo "&raquo; <a href=\"viewtopic.php?id=$tid\">$title</a> от $poster на $date<br />";
  }
 
?>

mysql_fetch_array(): supplied argument is not a valid MySQL result resource