comments-popup from a page

I am using a popup window for people to add comments on my blog.
Everything works fine!

I have now created stand alone pages in wordpress and included the option to add comments. However when the user clicks “add a comment” the pop up window opens but nothing is displayed.

Now this is due to the piece of code in the comments-popup.php file:

<?php
/* Don't remove these lines. */
add_filter('comment_text', 'popuplinks');
while ( have_posts()) : the_post();
?>

I am guessing that being as this popup is being called from a page then wordpress thinks there are no posts so the loop is not being entered!!

How do i get around this? I know it can be done as i’ve seen it!

Any help would be appreciated.
cheers