[Lynne]

I don't think it's going to work just on it's own (but it may, I don't remember). You may need to modify your code to create the variable $thread['firstpost'] and then do something like this (this is 3.6.8 code, so you may have to modify it for whatever version you use):

<if condition="$post['postid']!=$thread['firstpostid']">
            <if condition="$post['replylink']">
                <a href="$post[replylink]" rel="nofollow"><img src="$stylevar[imgdir_button]/<if condition="$post['forwardlink']">reply_small<else />quote</if>.gif" alt="$vbphrase[reply_with_quote]" border="0" /></a>
            </if>
            <if condition="$show['multiquote_post']">
                <a href="$post[replylink]" rel="nofollow" onclick="return false"><img src="$stylevar[imgdir_button]/multiquote_<if condition="$show['multiquote_selected']">on<else />off</if>.gif" alt="$vbphrase[multi_quote_this_message]" border="0" id="mq_$post[postid]" /></a>
            </if>
</if>

Like I said, I really don't know if it will work. You'll probably have to play with it a bit to get it to work.