Advanced Guestbook is an open source guestbook system.
From the Author
Advanced Guestbook is a guestbook script, which allows visitors to your website to post comments.
Features include: preview, templates, e-mail notification, picture upload, page spanning, html tags handling, smilies, advanced guestbook codes and language support. The admin script lets you modify, view, and delete messages.
Authors website: http://www.proxy2.de/scripts.php