Mike Alexander provided a new pt2007data.zip and this is up on the MrExcel site tonight. It should be on the QUE site within a day.
We wrote a good bit of the book while using beta versions of Excel 2007. Microsoft provided a total of five beta versions DF4, Beta 1, Beta1TR, Beta 2, Beta 2 TR. By the time the book was ready, the final version of Excel refused to open any files created in the first three beta formats, meaning that most of the sample files from the early part of the book could no longer be opened.