Código PHP:
<table width="460" align="center"><tr>
<?
$fotosxpag=6;
$kfotos=3;
require("conect.php");
$query = mysql_query("select url from dat_image");
while ($imagenes=mysql_fetch_array($query)){
?><td align="center">
<img src="<?=$imagenes["url"]?>" width="126" height="100"></td>
<?
$can=$can+1;
if($can%$kfotos==0)
{
?>
</tr>
<tr>
<?
}
$cant=$cant+1;
}
?></tr>
</table>