This is what Spudinski posted in the irc to help someone yesterday so i thought i would post it here to help everyone else.
Find/Create a file called .htaccess and add this into it :
ErrorDocument 403 /error.php
ErrorDocument 404 /error.php
ErrorDocument 405 /error.php
ErrorDocument 408 /error.php
ErrorDocument 500 /error.php
ErrorDocument 502 /error.php
ErrorDocument 504 /error.php
Then make a file called error.php and add this :
<?php
$status = $_SERVER['REDIRECT_STATUS'];
$codes = array(
403 => array('403 Forbidden', 'The server has refused to fulfill your request please contact webmaster.'),
404 => array('404 Not Found', 'The document/file requested was not found on teh server if possible report to the website owner.'),
405 => array('405 Method Not Allowed', 'The method specified in the Request-Line is not allowed for the specified resource.'),
408 => array('408 Request Timeout', 'Your browser failed to sent a request in the time allowed by the server.'),
500 => array('500 Internal Server Error', 'The request was unsuccessful due to an unexpected condition encountered by the server.'),
502 => array('502 Bad Gateway', 'The server received an invalid response from the upstream server while trying to fulfill the request.'),
504 => array('504 Gateway Timeout', 'The upstream server failed to send a request in the time allowed by the server.')
);
$title = $codes[$status][0];
$message = $codes[$status][1];
if ($title == false || strlen($status) != 3) {
$message = 'Please supply a valid status code.';
}
echo '
<h1>' . $title . '</h1></p>' .
'
' . $message . '</p>';
?>
And your done.