Showing Adsense *Only If There's" 2nd Post?

I already know how to stick adsense after 1st post, however that's not what I want.

For example: If there only ONE POST in a thread - adsense will NOT show under 1st post, but when there's a 2nd post.. the adsense then will appear under 1st post.

So basically, no 2nd post = no adsense.

I'm not sure but does it has anything with the <else> code?

Here's my coding sampling:

<if condition="in_array($post['postcount'], array(1,9,10,15,20))">
<div style="padding:6px 0px 0px 0px">
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" align="center">
<tr>
    <td class="alt1" align="center">
[COLOR=Red][B][I]ADSENSE CODES........[/I][/B][/COLOR]
    </td>
</tr>
</table>
</div>
</if>

Code (markup):

Any help is greatly appreciated
-Nhat

 

Hmm I would be interested in this too.