Thumbnail – Related Photos

Hi,

I can not figure out how to change the “Related Photos” header. I changed the thumbnail.php, but without any effect.

Thanks a lot for any hint

<?php
/*
YARPP Template: Thumbnails
Description: Requires a theme which supports post thumbnails
Author: mitcho (Michael Yoshitaka Erlewine)
*/ ?>
<h3>Mohlo by Vás také zajímat</h3>
<?php if (have_posts()):?>

<?php while (have_posts()) : the_post(); ?>
<?php if (has_post_thumbnail()):?>
1. ” rel=”bookmark” title=”<?php the_title_attribute(); ?>”><?php the_post_thumbnail(); ?>

<?php endif; ?>
<?php endwhile; ?>

<?php else: ?>
<p>No related photos.</p>
<?php endif; ?>

http://wordpress.org/plugins/yet-another-related-posts-plugin/