Smide links ind!

Jeg har lige et problem som jeg tror i kan hjælpe med!
I min gæstebog kan jeg ikke ligge links. Jeg kunne godt tænke mig at det var muligt bare f.eks. at skrive:
http://www.lordoftherings.net/trailer_rotk/video.html
og at det så fungerer som link i bogen!

Jeg tror det er her der skal ændres noget:
<?php
include("../guestbook/lib.php");
include("../guestbook/data.php");
/**
* $currDate and $currTime set a format of date and time;
* $ip and $host set IP address and Host
*/
$currHour=date("H",time());
$currDate=date("dS F, Y", time());
$currTime=date("$currHour:i:s", time());
$ip = getenv("REMOTE_ADDR");
$host = getHostByAddr($REMOTE_ADDR);

/**
* Send email to master
*/
$body = "Name: ".$nick."\nMessage: \n".$message."\nDate: [".$currDate.",".$currTime."]\nUrl: ".$url."\ne-mail: ".$email."\nip: ".$ip."\nhost: ".$host;
// @mail("$mail", "Guestbook", $body, "Content-Type: text/plain; charset=windows-1251\nContent-Transfer-Encoding: 8bit");

$nick = translateHtml($nick);
$url = translateHtml($url);
$email = translateHtml($email);

if (strlen($message) < $maxLengthMessage) {
    $message = ereg_replace("xxxxx","",$message);
    $message = ereg_replace("<!--resetline-->\n","",$message);

// Smileys
$message = str_replace('B-)','<img src="smileys/briller.gif" border="0">',$message);
$message = str_replace('*guns*','<img src="smileys/guns.gif" border="0">',$message);

    $message = stripslashes($message);
    $content = $ip."xxxxx".$host."xxxxx".$nick."xxxxx".$url."xxxxx".$email."xxxxx".$message."xxxxx".$currDate."xxxxx".$currTime."<!--resetline-->\n";
    writeDataInFile ($content);
}

Header("Location: index.php");
exit;
?>