Simple flat file php Guestbook

This guestbook was made in PHP. The pages use css and HTML so they are highly editable. The image at the top that looks like it can't be changed but it can be by just typing in the indicated space on the line what you want to be displayed! There is an easy to follow guide on how to set up the guestbook, and it uses a flat file so there's no need for any complicated MySQL databases. The script now includes a captcha provided by securimage to prevent spam. The script now logs the ip's into a php file so the guestbook is good against spammers. The guestbook also has complete protection from HTML, PHP or any other code that needs the < tag(s) to work. The guestbook now does not allow empty boxes to be added or boxes lower than the given value (you can change that easily). My site has been having problems lately due to the host, please be patient and try again in a few hours if it doesn't work. Thanks.