The CD-ROM accompanied the book.
How tonight I've read and looked again and again through page 51 in the book and around the CD-ROM. Just recently I found a Note Tab on Page 50.
'This recipe will not be accessible to Dreamweaver MX users with the PHP server model who do not have the authentication server behaviors installed. The authentication server behaviours were originally available on the Macromedia DevNet Resource kit (DRK), Volume 2 and later incorporated into Dreamwever MX 2004.
I'm off to post the next relevant Dreamweaver CS4 question on the Adobe forum.