Help merging 2 codes

[lordi]

Hello

Well, I was looking for ways to add Adsense code in my forum
================================================== ====

1- I got this code for adding ADSENSE in first post of the thread...
POSTBIT ==> Search <!-- message --> ADD BELOW

<if condition="(($post[postcount] % $vboptions[maxposts] == 1))">
       <div class="postbit_adcode">
<span style="float: right; width: 340px; height: 285px;">
			Your Code Goes Here
</span>
</div>
</if>

=============================================

2
BUT I had to find a code that allows me to STOP Adsense ads in some forums and sections

So, I got this code

<if condition="$post[postcount] == 1">
<if condition="($thread['forumid'] != '56') AND ($thread['forumid'] != '27') AND ($thread['forumid'] != '11')">
<center>
ADSENSE CODE HERE <center/> 
</if></if>

So, How Can I merge the "ADSENSE in FIRST POST" code (1) With the Stopping Code (2) ?