displaying records in '3 colums' - NEWBIE NEEDS HELP

[weewizard]

Hi guys
I am trying to display my images in 3 colums.

At presant I have this

http://www.richard-howells.co.uk/final_project/products.php

THe code for this is here:

<?php 
include('includes/misc.inc');
$per_row = 5; 
$query = mysql_query('SELECT product_type_description AS catname, product_type_image AS catimg FROM product_types ORDER BY product_type_description'); 
if(!$query)/*if $result not available */
  {die("Couldn't execute query. Reason: ".mysql_error());}

$i = 0; 
while ($row = mysql_fetch_array($query)) { 
   if ($i % $per_row == 0 && $i != 0) { 
      $i = 0; 
      echo '</tr><tr>'; 
   } 

echo '<td class="logindescriptions"><a href="..."><img src="images/thumbnail_images/' . $row['catimg'] . '" border="0"></a><br />' . $row['catname'] . '</td>'; 



   $i++; 

} 

if ($i != 0 && $i != $per_row) { 
   echo '<td colspan="' , ($per_row - $i) , '">&nbsp;</td>'; 
} 
?> 

I know that only a small poiece of coding is needed, i just dont know how to implement it.

Please help if possible.

Regards
Thnaks
Richard