This is my another favorite plugins, This plugins is perfect for some WordPress user that need to doing more with WordPress, such as create some portfolio website, company profile website and many more, like the developer has said

What it does

This plugin allows you to run loops within your WordPress templates where you query for children of the current page.

How it works

The plugin adds an extra argument to the list of arguments supported by query_posts(). The new query argument "child_of" is used to add a WHERE to the database query to limit the pages returned to those with a post_page equal to the argument provided.

If you really need this plugins you can download it on this page. This plugins has been tested on WordPress 2.7 and work without any worries