time ago, but here is what I had to do to perform is.
I had to edit edit_entry.tmpl and Util.pm.
sub html_text_transform {
my $str = shift;
$str ||= '';
$str =~ s/\:angry:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/angry.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:grin:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/grin.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:blah:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/blah.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:confused:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/confused.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:hrmph:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/hrmph.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:cry:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/cry.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:evil:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/evil.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:glasses:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/glasses.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:hug:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/hug.gif\" width=\"27\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:laugh:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/laugh.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:mad:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/mad.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:ooo:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/ooo.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:rmad:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/rmad.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:rolleyes:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/rolleyes.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:sad:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/sad.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:frown:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/sad.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:shocked:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/shocked.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:sleep:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/sleep.gif\" width=\"27\" height=\"25\" alt=\"\" \/>/g;
$str =~ s/\:zzz:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/sleep.gif\" width=\"27\" height=\"25\" alt=\"\" \/>/g;
$str =~ s/\:smile:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/smile.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:suspicious:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/suspicious.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:tongue:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/tongue.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:vconfused:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/wconfused.gif\" width=\"15\" height=\"25\" alt=\"\" \/>/g;
$str =~ s/\:wconfused:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/wconfused.gif\" width=\"15\" height=\"25\" alt=\"\" \/>/g;
$str =~ s/\:whimper:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/whimper.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
$str =~ s/\:wink:/<img src=\"http:\/\/www.toomuchsexy.org\/emoticons\/wink.gif\" width=\"15\" height=\"15\" alt=\"\" \/>/g;
my @paras = split /\r?\n\r?\n/, $str;
for my $p (@paras) {
if ($p !~ m/^<(?:table|ol|ul|pre|select|form|blockquote)/) {
$p =~ s!\r?\n!<br />\n!g;
$p = "<p>$p</p>";
}
}
join "\n\n", @paras;
}
<script language="javascript">
if (document.selection) {
document.write('<table border="0" cellspacing="0" cellpadding="0" width="107">');
document.write('<tr>');
document.write('<td width="75"><a href="http://www.toomuchsexy.org/smileykey.php" onclick="OpenSmilies(this.href); return false">Smiley Key</a></td>');
document.write('<td width="24"><a href="javascript:formatStr(\'b\')"><img src="<TMPL_VAR NAME=STATIC_URI>images/bold-button.gif" alt="bold" width="24" height="18" border="0"></a></td>');
document.write('<td width="24"><a href="javascript:formatStr(\'i\')"><img src="<TMPL_VAR NAME=STATIC_URI>images/italic-button.gif" alt="italic" width="24" height="18" border="0"></a></td>');
document.write('<td width="24"><a href="javascript:formatStr(\'u\')"><img src="<TMPL_VAR NAME=STATIC_URI>images/underline-button.gif" alt="underline" width="24" height="18" border="0"></a></td>');
document.write('<td width="26"><a href="javascript:insertLink()"><img src="<TMPL_VAR NAME=STATIC_URI>images/url-button.gif" alt="link" width="26" height="18" border="0"></a></td>');
document.write('</tr>');
document.write('</table>');
} else {
document.write('<table border="0" cellspacing="0" cellpadding="0" width="75">');
document.write('<tr>');
document.write('<td width="75"><a href="http://www.toomuchsexy.org/smileykey.php" onclick="OpenSmilies(this.href); return false">Smiley Key</a></td>');
document.write('</tr>');
document.write('</table>');
}
</script>