File->new
Click More Page Templates from the task pane on the right.
Choose Guestbook template
Edit the page to suit your website. Do not remove the word [guestlog]
near the bottom of the page - this is a place holder for your users
comments.
Save the page, change the filename to suit.
Refresh the Folder list by pressing F5.
Find, and drag the file guestlog.htm into the _private folder. This must be
done since the guestlog.htm needs write permissions which are (normally)
only available in the _private folder. guestlog.htm will be in the
folder containing your new guestbook.