nyeste besked øverst

hej.. hvordan gør jeg sådan, at når man man skriver i denne gæstebog, så vil det nyeste besked komme øverst?

---

<?php include "config.php"; ?>

<body background="bg.jpg" style="background-attachment: fixed">

<?php    $res_tagwall = mysql_query("SELECT * FROM tagwall order by id ASC");
            while ($row_tagwall = mysql_fetch_array($res_tagwall)){
?>
<div align="left">
  <table border="0" width="262" height="14" cellspacing="0" cellpadding="0">
    <tr>
      <td width="262" height="1"><font size="2" face="Verdana" color="#FFFFFFF"><i>Af</i> : <b><?php print $row_tagwall['fra']; ?></b></font></td>
    </tr>
    <tr>
      <td width="262" height="1"><font size="2" face="Verdana" color="#FFFFFFF"><i>Emne</i> : <b><?php print $row_tagwall['emne']; ?></b></font></td>
    </tr>
    <tr>
      <td width="262" height="14"><font size="2" face="Verdana" color="#FFFFFFF"><i>Besked</i> :</font></td>
    </tr>
    <tr>
      <td width="262" height="4"><font size="2" face="Verdana" color="#FFFFFFF"><b><?php print nl2br($row_tagwall['besked']); ?></b></font></td>
    </tr>
  </table>
</div><br>
<hr color="#FFFFFF">
</body>
<?php
}
?>
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