[Andreas]

Dunno if this is what you want, but:

Put this in phpinclude_start

PHP Code:

$toptodayquery = $DB_site->query("SELECT COUNT(postid) AS posts, userid, username FROM " . TABLE_PREFIX . "post WHERE dateline > UNIX_TIMESTAMP(NOW())-(UNIX_TIMESTAMP(NOW()) % 86400) GROUP BY userid ORDER BY posts DESC LIMIT 3");

$idx = 1;
while ($topposter = $DB_site->fetch_array($toptodayquery))
{
  eval('$_GLOBALS[topuser' . $idx . '] = $topposter[username];');
  eval('$_GLOBALS[topposts' . $idx . '] = $topposter[posts];');
  $idx++;
} 


In template navbar FIND

PHP Code:

<if condition="$bbuserinfo['userid']">
<td id="usercptools" class="vbmenu_control"><a href="#usercptools">$vbphrase[quick_links]</a> <script type="text/javascript"> vbmenu_register("usercptools"); </script></td>        
</if> 


BELOW that ADD

<td id="toptoday" class="vbmenu_control"><a href="#topposters">Top Posters</a> <script type="text/javascript"> vbmenu_register("toptoday"); </script></td>		

FIND

</div>
<!-- / user cp tools menu -->
</if>

BELOW that ADD

<div class="vbmenu_popup" id="toptoday_menu" style="display:none">
<table cellpadding="4" cellspacing="1" border="0">
<tr><td class="thead">Top Posters</td></tr>		
<tr><td class="vbmenu_option">$_GLOBALS[topuser1] ($_GLOBALS[topposts1] posts)</td></tr>
<tr><td class="vbmenu_option">$_GLOBALS[topuser2] ($_GLOBALS[topposts2] posts)</td></tr>
<tr><td class="vbmenu_option">$_GLOBALS[topuser3] ($_GLOBALS[topposts3] posts)</td></tr>
</table>
</div>