I've figured something out for the forumdisplay template icon key, as far as I can see, it works on my site, but feel free to improve it if you will.
Find in the FORUMDISPLAY template:
Code:
<!-- icon key -->
<if condition="$show['threadslist']">
<table cellpadding="2" cellspacing="0" border="0">
<tr>
<td><img src="$stylevar[imgdir_statusicon]/thread_new.gif" alt="$vbphrase[new_posts]" border="0" /></td>
<td class="smallfont">$vbphrase[new_posts]</td>
<if condition="$vboptions['usehotthreads']">
<td><img src="$stylevar[imgdir_statusicon]/thread_hot_new.gif" alt="<phrase 1="$vboptions[hotnumberposts]" 2="$vboptions[hotnumberviews]">$vbphrase[more_than_x_replies_or_y_views]</phrase>" border="0" /></td>
<td class="smallfont">$vbphrase[hot_thread_with_new_posts]</td>
<else />
<td colspan="2"> </td>
</if>
</tr>
<tr>
<td><img src="$stylevar[imgdir_statusicon]/thread.gif" alt="$vbphrase[no_new_posts]" border="0" /></td>
<td class="smallfont">$vbphrase[no_new_posts]</td>
<if condition="$vboptions['usehotthreads']">
<td><img src="$stylevar[imgdir_statusicon]/thread_hot.gif" alt="<phrase 1="$vboptions[hotnumberposts]" 2="$vboptions[hotnumberviews]">$vbphrase[more_than_x_replies_or_y_views]</phrase>" border="0" /></td>
<td class="smallfont">$vbphrase[hot_thread_with_no_new_posts]</td>
<else />
<td colspan="2"> </td>
</if>
</tr>
<tr>
<td><img src="$stylevar[imgdir_statusicon]/thread_lock.gif" alt="$vbphrase[closed_thread]" border="0" /></td>
<td class="smallfont">$vbphrase[thread_is_closed]</td>
<if condition="$show['dotthreads']">
<td><img src="$stylevar[imgdir_statusicon]/thread_dot.gif" alt="$vbphrase[thread_contains_a_message_written_by_you]" border="0" /></td>
<td class="smallfont">$vbphrase[you_have_posted_in_this_thread]</td>
<else />
<td colspan="2"> </td>
</if>
</tr>
</table>
<else />
<table cellpadding="0" cellspacing="2" border="0" width="100%">
<tr valign="bottom">
<td>
<table cellpadding="2" cellspacing="0" border="0">
<tr>
<td><img src="$stylevar[imgdir_statusicon]/forum_new.gif" alt="$vbphrase[contains_new_posts]" border="0" /></td>
<td class="smallfont"> $vbphrase[forum_contains_new_posts]</td>
</tr>
<tr>
<td><img src="$stylevar[imgdir_statusicon]/forum_old.gif" alt="$vbphrase[contains_no_new_posts]" border="0" /></td>
<td class="smallfont"> $vbphrase[forum_contains_no_new_posts]</td>
</tr>
<tr>
<td><img src="$stylevar[imgdir_statusicon]/forum_old_lock.gif" alt="$vbphrase[a_closed_forum]" border="0" /></td>
<td class="smallfont"> $vbphrase[forum_is_closed_for_posting]</td>
</tr>
</table>
</td>
</tr>
</table>
</if>
<!-- / icon key -->
<!-- forum rules & forum jump -->
<table cellpadding="0" cellspacing="0" border="0" width="100%" align="center">
<tr valign="top">
<td width="100%">
<div class="smallfont"> </div>
<if condition="$show['threadslist']">$forumrules</if>
</td>
<td>
$forumjump
<if condition="!$show['popups'] AND $show['adminoptions']">
<br />
<form action="moderator.php" method="get">
<input type="hidden" name="s" value="$session[sessionhash]" />
<input type="hidden" name="f" value="$forumid" />
<div class="smallfont"><strong>$vbphrase[admin_tools]</strong>:</div>
<select name="do" onchange="this.form.submit();">
<optgroup label="$vbphrase[admin_tools]">
<option value="modposts" selected="selected">$vbphrase[view_posts_queue]</option>
<option value="modattach">$vbphrase[view_attachment_queue]</option>
<option value="move">$vbphrase[mass_move]</option>
<option value="prune">$vbphrase[mass_prune]</option>
<if condition="$show['addmoderator']">
<option value="addmoderator">$vbphrase[add_moderator]</option>
</if>
</optgroup>
</select>$gobutton
</form>
</if>
</td>
</tr>
</table>
<!-- / forum rules & forum jump -->
Replace it with:
Code:
<!-- icon key -->
<if condition="$show['threadslist']">
<table class="alt2" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="75%" align="center">
<td><img src="$stylevar[imgdir_statusicon]/thread_new.gif" alt="$vbphrase[new_posts]" border="0" /></td>
<td class="smallfont">$vbphrase[new_posts]</td>
<if condition="$vboptions['usehotthreads']">
<td><img src="$stylevar[imgdir_statusicon]/thread_hot_new.gif" alt="<phrase 1="$vboptions[hotnumberposts]" 2="$vboptions[hotnumberviews]">$vbphrase[more_than_x_replies_or_y_views]</phrase>" border="0" /></td>
<td class="smallfont">$vbphrase[hot_thread_with_new_posts]</td>
<else />
<td colspan="2"> </td>
</if>
<td><img src="$stylevar[imgdir_statusicon]/thread.gif" alt="$vbphrase[no_new_posts]" border="0" /></td>
<td class="smallfont">$vbphrase[no_new_posts]</td>
<if condition="$vboptions['usehotthreads']">
<td><img src="$stylevar[imgdir_statusicon]/thread_hot.gif" alt="<phrase 1="$vboptions[hotnumberposts]" 2="$vboptions[hotnumberviews]">$vbphrase[more_than_x_replies_or_y_views]</phrase>" border="0" /></td>
<td class="smallfont">$vbphrase[hot_thread_with_no_new_posts]</td>
<else />
<td colspan="2"> </td>
</if>
<td><img src="$stylevar[imgdir_statusicon]/thread_lock.gif" alt="$vbphrase[closed_thread]" border="0" /></td>
<td class="smallfont">$vbphrase[thread_is_closed]</td>
<if condition="$show['dotthreads']">
<td><img src="$stylevar[imgdir_statusicon]/thread_dot.gif" alt="$vbphrase[thread_contains_a_message_written_by_you]" border="0" /></td>
<td class="smallfont">$vbphrase[you_have_posted_in_this_thread]</td>
<else />
<td colspan="2"> </td>
</if>
</table>
<else />
<table class="alt2" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="75%" align="center">
<td>
<table class="alt2" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="75%" align="center">
<td><img src="$stylevar[imgdir_statusicon]/forum_new.gif" alt="$vbphrase[contains_new_posts]" border="0" /></td>
<td class="smallfont"> $vbphrase[forum_contains_new_posts]</td>
<td><img src="$stylevar[imgdir_statusicon]/forum_old.gif" alt="$vbphrase[contains_no_new_posts]" border="0" /></td>
<td class="smallfont"> $vbphrase[forum_contains_no_new_posts]</td>
<td><img src="$stylevar[imgdir_statusicon]/forum_old_lock.gif" alt="$vbphrase[a_closed_forum]" border="0" /></td>
<td class="smallfont"> $vbphrase[forum_is_closed_for_posting]</td>
</table>
</td>
</table>
</if>
<!-- / icon key -->
<!-- forum rules & forum jump -->
<br /><br />
<table cellpadding="0" cellspacing="0" border="0" width="100%" align="center">
<tr valign="top">
<td width="100%">
<div class="smallfont"> </div>
<if condition="$show['threadslist']">$forumrules</if>
</td>
<td>
$forumjump
<if condition="!$show['popups'] AND $show['adminoptions']">
<br />
<form action="moderator.php" method="get">
<input type="hidden" name="s" value="$session[sessionhash]" />
<input type="hidden" name="f" value="$forumid" />
<div class="smallfont"><strong>$vbphrase[admin_tools]</strong>:</div>
<select name="do" onchange="this.form.submit();">
<optgroup label="$vbphrase[admin_tools]">
<option value="modposts" selected="selected">$vbphrase[view_posts_queue]</option>
<option value="modattach">$vbphrase[view_attachment_queue]</option>
<option value="move">$vbphrase[mass_move]</option>
<option value="prune">$vbphrase[mass_prune]</option>
<if condition="$show['addmoderator']">
<option value="addmoderator">$vbphrase[add_moderator]</option>
</if>
</optgroup>
</select>$gobutton
</form>
</if>
</td>
</tr>
</table>
<!-- / forum rules & forum jump -->
Hope you didn't mind me putting it in this thread rather than start a new one, as it relates to the icon key anyway.