How do I convert this to V1 :) ? It's authenticate.php file BTW 
  
<?php 
session_start(); 
if(get_magic_quotes_gpc() == 0) 
{ 
foreach($_POST as $k => $v) 
{ 
  $_POST[$k]=addslashes($v); 
} 
foreach($_GET as $k => $v) 
{ 
  $_GET[$k]=addslashes($v); 
} 
} 
include "config.php"; 
global $_CONFIG; 
define("MONO_ON", 1); 
require "class/class_db_{$_CONFIG['driver']}.php"; 
$db=new database; 
$db->configure($_CONFIG['hostname'], 
 $_CONFIG['username'], 
 $_CONFIG['password'], 
 $_CONFIG['database'], 
 $_CONFIG['persistent']); 
$db->connect(); 
$c=$db->connection_id; 
$set=array(); 
$settq=$db->query("SELECT * FROM settings"); 
while($r=$db->fetch_row($settq)) 
{ 
$set[$r['conf_name']]=$r['conf_value']; 
} 
if ($_POST['username'] == "" || $_POST['password'] == "") 
{ 
die("<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Transitional//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'> 
<html> 
<head> 
<meta http-equiv='Content-Type' content='text/html; charset=utf-8' /> 
<title>Fallen City- Login</title> 
<link href='front.css' media='screen, projection' rel='stylesheet' type='text/css'> 
</head> 
<body> 
<table width='850' border='0' align='center' cellspacing='0'> 
  <tr bgcolor='#000000'> 
    <td width='850' height='400' background='images/fc.png' valign='top'><div id='container'> 
  <div id='topnav' class='topnav' >Are you a member? <span>Register</span>  </div> 
  <fieldset id='register_menu'> 
    <form action=register.php method=post name=register> 
      <label for='username'>Username</label> 
      <input type=text name=username onkeyup='CheckUsername(this.value);'><div id='usernameresult'></div> 
      </p> 
  
        <label for='password'>Password</label> 
        <input type=password id='pw1' name=password onkeyup='CheckPasswords(this.value);PasswordMatch();'><div id='passwordresult'></div> 
      </p> 
  
        <label for='cpassword'>Confirm Password</label> 
        <input type=password name=cpassword id='pw2' onkeyup='PasswordMatch();'><div id='cpasswordresult'></div> 
      </p> 
  
        <label for='email'>Email</label> 
        <input type=text name=email onkeyup='CheckEmail(this.value);'><div id='emailresult'></div> 
      </p> 
  
        <label for='gender'>Gender</label> 
        <select name='gender' type='dropdown'> 
	<option value='Male'>Male 
	<option value='Female'>Female</select> 
      </p> 
  
      <center><input id='register_submit' value='Register' tabindex='6' type='submit'></center> 
      </p></td> 
    </form> 
  </fieldset>  
  </div> 
<script src='javascripts/jquery.js' type='text/javascript'></script> 
<script type='text/javascript'> 
        $(document).ready(function() { 
            $('.register').click(function(e) {           
				e.preventDefault(); 
                $('fieldset#register_menu').toggle(); 
				$('.register').toggleClass('menu-open'); 
            }); 
			$('fieldset#register_menu').mouseup(function() { 
				return false 
			}); 
			$(document).mouseup(function(e) { 
				if($(e.target).parent('a.register').length==0) { 
					$('.register').removeClass('menu-open'); 
					$('fieldset#register_menu').hide(); 
				} 
			});			 
        }); 
</script> 
<script src='javascripts/jquery.tipsy.js' type='text/javascript'></script> 
<script type='text/javascript'> 
    $(function() { 
	  $('#forgot_username_link').tipsy({gravity: 'w'});    
    }); 
  </script></td> 
  </tr> 
  <tr class='info'> 
  <td background='images/bottom.png' align='center' height='98' valign='middle'> 
    <form action=authenticate.php method=post name=login> 
  
      You did't fill the login form. 
      <label for='username'>Username</label> 
      <input type=text name=username> 
        <label for='password'>Password</label> 
        <input type=password name=password> 
        <input id='signin_submit' value='Sign in' tabindex='6' type='submit'> 
      </p> 
    </form> 
</td> 
</tr> 
</table> 
</body> 
</html>"); 
} 
$uq=$db->query("SELECT userid FROM users WHERE login_name='{$_POST['username']}' AND `userpass`=md5('{$_POST['password']}')"); 
if ($db->num_rows($uq)==0) 
{ 
die("<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Transitional//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'> 
<html> 
<head> 
<meta http-equiv='Content-Type' content='text/html; charset=utf-8' /> 
<title>Fallen City- Login</title> 
<link href='front.css' media='screen, projection' rel='stylesheet' type='text/css'> 
</head> 
<body> 
<table width='850' border='0' align='center' cellspacing='0'> 
  <tr bgcolor='#000000'> 
    <td width='850' height='400' background='images/fc.png' valign='top'><div id='container'> 
  <div id='topnav' class='topnav' >Are you a member? <span>Register</span>  </div> 
  <fieldset id='register_menu'> 
    <form action=register.php method=post name=register> 
      <label for='username'>Username</label> 
      <input type=text name=username onkeyup='CheckUsername(this.value);'><div id='usernameresult'></div> 
      </p> 
  
        <label for='password'>Password</label> 
        <input type=password id='pw1' name=password onkeyup='CheckPasswords(this.value);PasswordMatch();'><div id='passwordresult'></div> 
      </p> 
  
        <label for='cpassword'>Confirm Password</label> 
        <input type=password name=cpassword id='pw2' onkeyup='PasswordMatch();'><div id='cpasswordresult'></div> 
      </p> 
  
        <label for='email'>Email</label> 
        <input type=text name=email onkeyup='CheckEmail(this.value);'><div id='emailresult'></div> 
      </p> 
  
        <label for='gender'>Gender</label> 
        <select name='gender' type='dropdown'> 
	<option value='Male'>Male 
	<option value='Female'>Female</select> 
      </p> 
  
      <center><input id='register_submit' value='Register' tabindex='6' type='submit'></center> 
      </p></td> 
    </form> 
  </fieldset>  
  </div> 
<script src='javascripts/jquery.js' type='text/javascript'></script> 
<script type='text/javascript'> 
        $(document).ready(function() { 
            $('.register').click(function(e) {           
				e.preventDefault(); 
                $('fieldset#register_menu').toggle(); 
				$('.register').toggleClass('menu-open'); 
            }); 
			$('fieldset#register_menu').mouseup(function() { 
				return false 
			}); 
			$(document).mouseup(function(e) { 
				if($(e.target).parent('a.register').length==0) { 
					$('.register').removeClass('menu-open'); 
					$('fieldset#register_menu').hide(); 
				} 
			});			 
        }); 
</script> 
<script src='javascripts/jquery.tipsy.js' type='text/javascript'></script> 
<script type='text/javascript'> 
    $(function() { 
	  $('#forgot_username_link').tipsy({gravity: 'w'});    
    }); 
  </script></td> 
  </tr> 
  <tr class='info'> 
  <td background='images/bottom.png' align='center' height='98' valign='middle'> 
    <form action=authenticate.php method=post name=login> 
  
	The username and password don't match. 
      <label for='username'>Username</label> 
      <input type=text name=username> 
        <label for='password'>Password</label> 
        <input type=password name=password> 
        <input id='signin_submit' value='Sign in' tabindex='6' type='submit'> 
      </p> 
    </form> 
</td> 
</tr> 
</table> 
</body> 
</html>"); 
} 
else 
{ 
$_SESSION['loggedin']=1; 
$mem=$db->fetch_row($uq); 
$_SESSION['userid']=$mem['userid']; 
$IP = ($_SERVER['HTTP_X_FORWARDED_FOR']) 
    ?  $_SERVER['HTTP_X_FORWARDED_FOR'] 
    :  $_SERVER['REMOTE_ADDR']; 
$db->query("UPDATE users SET lastip_login='$IP',last_login=unix_timestamp() WHERE userid={$mem['userid']}"); 
if($set['validate_period'] == "login" && $set['validate_on']) 
{ 
$db->query("UPDATE users SET verified=0 WHERE userid={$mem['userid']}"); 
} 
header ("location: loggedin.php"); 
} 
?>