The book (and its source code) was written for versions "1.0" and "1.0 Refresh" of XNA.
After XNA 2.0 was released, I converted the examples. You can find the updated source code by visiting the following link.
http://codetopia.com/cs/files/7/xna_book_files/category1017.aspxThanks for buying the book. Please let me know if you run into any more problems.
-- joe
There are 10 kinds of people in this world -- Those that can count in binary, and those that can't.