Adsense placment question

[beastybob]

I'm tiring to get my adsense to show at the bottom of the first post in a thread and the last post of each page.

I have got it displayed below the first post fine but I can not make it show on the last post of each page I can only get it to show on the last post of each thread.

I'm using this code:

<if condition="($post[islastshown] and $post[postcount] % $vboptions[maxposts] > 1 and !$GLOBALS[?vbulletin?]->GPC[?ajax?])">
    <div style="padding:6px 0px 0px 0px;margin-top:4px;">

    <table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" align="center">
    <tr>
        <td class="thead" align="left">Sponsored Links</td>
    </tr>
    <tr>
        <td class="alt1" align="center">
        <br />
<my adsens code>
        </td>
    </tr>
    </table>

    </div>

Anyone know what I'm doing wrong?

My forum if it helps : www.feedthegeeks.com/forum/

Thanks