I placed my google ads in the navbar template.
<div class="navbar" style="font-size:10pt"><a href="$vboptions[forumhome].php?$session[sessionurl]" accesskey="1"><img class="inlineimg" src="$stylevar[imgdir_misc]/navbits_start.gif" alt="" border="0" /></a> <strong>$vboptions[bbtitle]</strong></div>
</if>
</td>
<!-- ads -->
<td class="alt2" valign="top" nowrap="nowrap">
<script type="text/javascript"><!--
google_ad_client = "";
google_ad_width = 468;
google_ad_height = 60;
google_ad_format = "468x60_as";
google_ad_type = "text_image";
google_ad_channel ="";
//--></script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</td>
<!-- ads -->
<if condition="$bbuserinfo['userid']">
<td class="alt2" valign="top" nowrap="nowrap">
<div class="smallfont">
<!--<span style="float:$stylevar[right]">[<a