//in index.php

<?php
define('IN_PHPBB', true);
$phpbb_root_path = './forums/';
include($phpbb_root_path . 'extension.inc');
include($phpbb_root_path . 'common.'.$phpEx);
$userdata = session_pagestart($user_ip, PAGE_FRONTPAGE);
init_userprefs($userdata); 
include("top.php");
?>

//in top.php
<br>
<font size ="2" color="#990000">Community<br></font>
<font color="910608">+</font> <a href="<?php append_sid("/forums/index.php")?>">Forums</a><br>
<br>