[Admin]

Blue: In search.php find this code:

  $wheresql="1=1".$forumsql.$usersql;

And add this portion of code right AFTER it:

  if (!empty($days)) {
	  $wheresql .= ' AND post.dateline > '.(time() - (60*60*24*$days));
  }

Now change the link to this (in the postbit template):

<a href="member.php?s=$session[sessionhash]&action=getinfo&userid=$post[userid]&days=3">

(3 being the number of days to search for)