Last December, I started writing "Developing Service Oriented AJAX Applications on the Microsoft Framework". It's finally done, and available at your favorite local neighborhood bookstore. If you're local to Denver, I have a 30% off coupon for Service Oriented AJAX from SoftPro books (Yosemite, just south of Arapahoe). Email "me at dan larson dot com" and I'll gladly send you a coupon.