How to add <script> to the front page?

[Bainzey]

I have an IPB forum

http://www.snapbackforum.com

I would like to add ad's on the right of the page under the recent topics area.. although I have no idea how to add this script..

<script type="text/javascript"><!--
    kmn_placement = '2db1571e3d0bdfd';
//--></script>
<script type="text/javascript" src="htdeofhweyfgweuf/scripts/kmn_sa.js"></script>

(Scripts been edited for security)

Any ideas?

 

[Lock Down]

If you are using the 3.3x version there is the ad system
System Settings > System > Ad Code Integration

and in particular under hooks
Ad Code Sidebar v1.0.0
Displays ad code on the board index sidebar