This plugin adds the same functionality of the excerpt feature in posts to pages.
On the create (or edit) pages page, you will see a box called 'Page Excerpt'. It allows you to put in a short summary of your content. You can then call it using the
<?php the_excerpt(); ?> function within the loop
Post a message on PageExcerpt's page and leave a message in the comments if you have a question that needs answering!