[Logician]

this is a little tricky so I'm not sure if it will work (and too lazy to try myself) but give it a try:

edit search.php and find:

PHP Code:

$datesql=" AND thread.lastpost>=".(time() - (24 * 60 *60 * $days)); 


and replace it as:

PHP Code:

if ($bbuserinfo[userid]==0 AND $bbuserinfo[lastvisit]>1 AND $bbuserinfo[lastvisit]<mktime (date("H"), date("i"), date("s"), date("m"), date("d")-1, date("Y"))) 
    {$datesql=" AND thread.lastpost>=".$bbuserinfo[lastvisit];}
else{ 
    $datesql=" AND thread.lastpost>=".(time() - (24 * 60 *60 * $days));
} 


It looks like it will do the trick..

Logician