php cs-rss-drupal.php http://<your domain name here>/upload/page_dump_rss_file.xml
The script runs and spits out a lot of progress information.
Check out your Drupal site. You should have a new item in the Navigation menu called 'Imported Site'. This has a submenu for images (a node for each image from your site), a submenu for uploads (a node for each uploaded document), and another submenu named for your site containing all the pages.