Microsoft Press; Deluxe edition (May 10, 2008) Ed Bott, Carl Siechert, and Craig Stinson. ISBN: 0735625247
The First edition of this book came out January of 2007. The latest version will be breaking your mailbox in May.
This edition has advanced information. You get 300+ new pages in this update. New topics include advanced networking, security, and corporate deployment issues as well as advanced features such as speech recognition, Tablet PC support, and Windows Vista certification.
Ed Bott is a Microsoft Guru. If you can hold off until its release, you'll be well rewarded. If not, pick up the earlier edition.