Attatch Images

<?php

$args = array('post_type' => 'attachment','numberposts' => -1,'post_parent' => $post->ID);
$attachments = get_posts($args);
$current_post_thumbnail = get_post_thumbnail_id($id);

if($attachments){
foreach($attachments as $attachment){
if($attachment->ID == $current_post_thumbnail) continue;
echo wp_get_attachment_image($attachment->ID, 'thumbnail' );
break;
}
}
?>