As explained in the FAQ at
http://p2p.wrox.com/topic.asp?TOPIC_ID=268
The database containing the answers to the exercises was corrupt when Wiley got them. They have managed to recover three of those. As of yet, the exercise answers in the book your looking for have not been recovered.
Hal Levy
Unemployed (Thanks GWB)
NOT a Wiley/Wrox Employee