The ebook you purchased is owned by APress, despite what the listing says on Amazon and despite what the copyright in the ebook says. This ebook was published in 2002, prior to the situation that lead to our ownership of some Wrox books (http://www.wrox.com/misc-pages/booklist.shtml) and the name for new Wrox books starting in 2003.
You'll need to contact APress regarding both that book and the site.

Jim Minatel
Senior Acquisitions Editor
Wiley Technology Publishing
WROX Press