NextGen gallery slideshow

hey everyone,
i am working on a site. the customer is using NextGen gallery in wordpress. it works great! how ever….i want to to display the NextGen gallery as a slide show on a page out side wordpress. I have looked in to short code and found this. (this code does not work)

<?php
require('../wp-blog-header.php');
?>
<?php echo do_shortcode('[monoslideshow id=2 w=640 h=358]'); ?>

this is all the code i have on the site. I am thinking i need to include another file but i dont know.. WHY IS THIS NOT WORKING!!!!! PLEASE HELP