Mod Description: This plugin will add the user agent string to each post. Settings include<br/>
<ul>
<li>Enable/Disable</li>
<li>Forums to do it in</li>
<li>User groups to do it to</li>
<li>Prefix of the String IE </li>
<li>Suffix of the string IE </li>

Link to Mods DB: Get It

Thanks, will try it..
any update?