um Adsense nach jedem Forum beitrag anzeigen zu lassen ist der code so, und da muss man nicht wirklich php können :-),
also ich denke mal du meinst es so
<br />
<table width="100%" border="0" cellspacing="0" cellpadding="0">
  <tr> 
    <td width="60%">{SITELINK}</td>
    <td width="40%" align="right">{ANTWORTEN}</td>
  </tr>
</table>
<table width="100%" border="0" cellspacing="1" cellpadding="2" class="border">
  <tr class="Chead"> 
    <th colspan="2" height="30"><b>{TOPICNAME}</b></td>
  </tr>
	{EXPLODE}
  <tr class="{class}"> 
    <td width="20%" valign="top"><a name="{id}"></a>{erst}<br /><font class="smalfont">{rang}{avatar}{posts}</font></td>
    <td width="80%" valign="top">
		  <div style="float: left; width:50%;" class="smalfont"><a class="smallfont" href="index.php?forum-showposts-{TID}#{id}" title="{i}. Post in diesem Thema">#</a> {date}</div>
      <div style="float: right; width: 50%; text-align:right;">{delete}   {change}   <a href="index.php?forum-newpost-{TID}-z{id}">{_lang_quote}</a></div>
      <br />
      <hr />      
			<br />
									
									{txt}
					        {sig}
		</td>
  </tr>
  <tr> 
    <td colspan="2" class="Cdark" height="10"></td>
  </tr>
  <tr>
  <td><script type="text/javascript"><!--
google_ad_client = "pub-9693277879098790";
/* 728x90, Forum */
google_ad_slot = "8839821191";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</td>
</tr>
	{EXPLODE}
</table>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
  <tr> 
    <td width="60%">{SITELINK}</td>
    <td width="40%" align="right">{ANTWORTEN}</td>
  </tr>
</table>
{EXPLODE}
<br />
<strong>{_lang_administrattopic}</strong><br />
<a href="javascript:renametopic()">{_lang_rename}</a>
 , 
<a href="index.php?forum-edittopic-{tid}-2">{_lang_delete}</a>
 , 
<a href="index.php?forum-edittopic-{tid}-3">{_lang_shift}</a>
 , 
<a href="index.php?forum-edittopic-{tid}-4-2">{status}</a>
 , 
<a href="index.php?forum-edittopic-{tid}-5">{festnorm}</a>
<script language="JavaScript" type="text/javascript">
<!--
  function renametopic () {
	  var x = prompt ( "Bitte den neuen Namen vom Thema eintragen" , "" );
		if ( x ) {
		  document.location.href="index.php?forum-edittopic-{tid}-1=0&newTopic="+x;
		}
	}
	
//-->
</script>