I appreciate your note. I repeatedly told the project editor at the publisher that people expect download files with my books. He repeatedly told me that this series, Special Edition Using xyz doesn't include sample files.
Now... the book is out, and of course people want sample files. Unfortunately, many of the sample files for the book were created in beta 1 and will no longer open in Excel 2007, rendering the sample files useless.
That is some really bad news. The slightly good news - for Excel 2010, the publisher is encouraging sample files.