Where to put code in my template

I have a child theme for Twenty Ten, and I have a copy of the loop.php file in my child theme’s folder. Is that where I put the code for the attachments plugin?

<?php
  if( function_exists( 'attachments_get_attachments' ) )
  {
    $attachments = attachments_get_attachments();
    $total_attachments = count( $attachments );
    if( $total_attachments ) : ?>
      <ul>
      <?php for( $i=0; $i<$total_attachments; $i++ ) : ?>
        <li><?php echo $attachments[$i]['title']; ?></li>
        <li><?php echo $attachments[$i]['caption']; ?></li>
        <li><?php echo $attachments[$i]['id']; ?></li>
        <li><?php echo $attachments[$i]['location']; ?></li>
        <li><?php echo $attachments[$i]['mime']; ?></li>
      <?php endfor; ?>
      </ul>
    <?php endif; ?>
<?php } ?>

In what part of the file should I put the code? Any help would be greatly appreciated.