text replace with images

[Goomzee]

this is my forum page
http://www.mknexusonline.com/forums/index.php
and this forum
http://www.mknexusonline.com/forums/forum22/
now there are some subforums under above forum
i want to put image in this forum
http://www.mknexusonline.com/forums/forum80/ (Example image A )
http://www.mknexusonline.com/forums/forum79/ (Example Image B)

you must see this attached

below is code

<tr align="center">
<td class="alt2"><img src="$stylevar[imgdir_statusicon]/$forum[imageprefix]forum_$forum[statusicon].gif" alt="" border="0" id="forum_statusicon_$forum[forumid]" /></td>
<td class="alt1Active" align="$stylevar[left]" id="f$forum[forumid]">
<div>
<a href="external.php?type=rss2&forumids=$forum[forumid]"><img src="images/misc/rss.gif" border="0" align="right" alt="RSS Feed for $forum[title]" /></a>

<a href="forumdisplay.php?$session[sessionurl]f=$forum[forumid]"><img border="0" src="images/tealblack/statusicon/mkx_raiden_subforum.png" hspace="4px" align="left"/></a>

<a href="forumdisplay.php?$session[sessionurl]f=$forum[forumid]"><img border="0" src="images/tealblack/statusicon/mkx_sz_subforum.png" hspace="4px" align="left"/></a>

<a href="forumdisplay.php?$session[sessionurl]f=$forum[forumid]"><strong>$forum[title]</strong></a>
<if condition="$show['browsers']"><span class="smallfont">(<phrase 1="$forum[browsers]">$vbphrase[x_viewing]</phrase>)</span></if>
</div>
<if condition="$show['forumdescription']"><div class="smallfont">$forum[description]</div></if>
<if condition="$show['forumsubscription']"><div class="smallfont"><strong><a href="subscription.php?$session[sessionurl]do=removesubscription&amp;f=$forum[forumid]" rel="nofollow">$vbphrase[unsubscribe_from_this_forum]</a></strong></div></if>
<if condition="$show['subforums']"><div class="smallfont" style="margin-top:$stylevar[cellpadding]px"><strong>$vbphrase[subforums]</strong>: $forum[subforums]</div></if>
</td>
<td class="alt2"><a href="member.php?find=lastposter&f=$forum[forumid]" rel="nofollow"><img height="32px" style="float:left;margin-right:4px" src="$forum[avatarurl]" border="0" /></a><div style="padding-left:36px;">$forum[lastpostinfo]</div></td>
<td class="alt1">$forum[threadcount]</td>
<td class="alt2">$forum[replycount]</td>
<if condition="$vboptions['showmoderatorcolumn']">
<td class="alt1"><div class="smallfont">$forum[moderators]&nbsp;</div></td>
</if>
</tr>
$childforumbits