A little help

[Insecure]

I am looking for a little help with some php.  The code that I have posted is all working properly, but as you can tell it is pretty messy and I think is probably the hardest way to come up with the results.  I am wondering if anyone can help me clean up this code a little.  I am not a pro by any means with php but I do understand a bit.  I have never been able to really understand the join option in MySQL and I'm thinking that might help me here but I am not sure.  If any one has any ideas of how to make this cleaner I would appreciate the feedback.

 

  $info = '';

   $rgs_sql = $db->query("SELECT * FROM " . DB_RANKGROUPS . " WHERE `display` = '1' ORDER BY `displayorder` DESC");
    while($rgs = $db->fetch_array($rgs_sql)) {
     $rankgroupID = $rgs['id'];
     $rankgroupName = $rgs['groupname'];
      
       $info .= "
       <table width='75%'>
        <tr>
         <td><center><font size=+1 color=white><strong>$rankgroupName</strong></font></center></td>
        </tr>
       </table>
      
       <table width='75%'>
        <tr>
         <td width='15%'><strong>Rank</strong></td>
         <td width='25%'><strong>Username</strong></td>
         <td width='20%'><strong>Content</strong></td>
         <td width='20%'><strong>DSL</strong></td>
         <td width='15%'><strong>Online Status</strong></td>
        </tr>
       ";

     
      $ranks_sql = $db->query("SELECT * FROM " . DB_RANKS . " WHERE `display` = '1' AND `group` = '$rankgroupID' ORDER BY `ranknum` DESC");
      while($ranks = $db->fetch_array($ranks_sql)) {
       $rank = $ranks['ranknum'];
        
        $sql = $db->query("SELECT * FROM " . DB_MEMBERS . " WHERE `rank` = '$rank' AND `status` = '1' ORDER BY `username` ASC");
        while($row = $db->fetch_array($sql)) {
          $username = $row['username'];
          $rank     = $row['rank'];
          $dsl      = "Hello";
          $onlinestatus = "on"; //$users->getOnlineStatus($row['id']);
          
          $info .= "
           <tr>
            <td width='20%'><img src='".RANK_IMAGES."/$rank.".RANK_IMAGES_EXT."'></td>
            <td width='25%'><a href=index.php?page=Members&profile=$username>$username</a></td>
            <td width='20%'>Content</td>
            <td width='20%'>$dsl</td>
            <td width='15%'><center><img src=/includes/images/$onlinestatus.gif'></center></td>
           </tr>
          ";
         
         }
             
     }
      
     $info .= "
     </table><br>
     ";    
    }