Placing Adsense

[specmav]

Yup another Adsense post.

I am looking to place adsense after the first post, after the 5th post and the last post. I also want to hide it from admins, mods and paid subscribers.

What do I need to finish this code, where do I need to place it and do I need to place it in more than one place?

<if condition="$post[postcount] == 1" condition="!is_member_of($bbuserinfo, 1, 2, 3)">

$spacer_open
<div style="padding:0px 0px $stylevar[cellpadding]px 0px">

<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">
		ADSENSE CODE
	</td>
</tr>
</table>

</div>
$spacer_close

</if>

Thanks for the help!