Código PHP:
<div align="left">
<table border="0" cellpadding="0" cellspacing="0" bgcolor="#ffffff">
<tr>
<td width="147" valign="top"><div align="left">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="147" height="143" background="files_1/news/tn1.png" valign="top"><div align="left">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="23" height="23"></td>
<td></td>
</tr>
<tr>
<td></td>
<td width="100" height="100">{avatar}</td>
</tr>
</table>
</div></td>
</tr>
<tr>
<td valign="top" background="files_1/news/tnline1.png">publicidad</td>
</tr>
</table>
</div></td>
<td valign="top" width="334" background="files_1/news/tnline2.png"><div align="left">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="334" height="91" background="files_1/news/tn.png" valign="top"><div align="left">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="35" height="24"></td>
<td></td>
</tr>
<tr>
<td></td>
<td height="22"><div id="title-news">[link]{title}[/link]</div></td>
</tr>
</table>
</div><div align="left">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="13" height="19"></td>
<td></td>
</tr>
<tr>
<td></td>
<td><div id="info-news">Publicado por <a href="#">Juan</a> el dia {date}</div></td>
</tr>
</table>
</div>
</td>
</tr>
<tr>
<td valign="top" background="files_1/news/tnline2.png"><div align="left">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="10"></td>
<td width="310">{short-story}</td>
<td width="10"></td>
</tr>
</table>
</div></td>
</tr>
</table>
</div></td>
</tr>
</table>
<div align="left">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="481"><?php include('contenidos/banners.php'); ?> </td>
</tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" bgcolor="#ffffff">
<tr>
<td valign="top"><div align="left"></div></td>
</tr>
</table>
<p> </p>
</div>
</div>
el problema estaba en q lo tenias fueras de etiquetas.. no habia body, ni div, ni tablas....
saludos