For those that are preparing for the CWNA and are looking for a great test engine you can access it here.
The test bank materials can be found in the Downloads section of that page. You have to log in first. Just follow that login link.
There is a link listed in the book that refers you to Sybex.com but that link doesn't work now that Wiley has taken over the printing.
Let me know if you can't get there. It's not real intuitive but it does work.