Microsoft IIS 6 Delta Guide

If you want to learn IIS 6.0 architect and how it differ from IIS 5.0 in detail than this is the book for you. It's very concise (but does not miss any details), and to-the-point presented in very interesting manner that you may want to read it full in one sitting and amazingly you can. Positives are: Cheap, light, handy, almost 350 pages, presented very clearly and concisely. Covers all or more then all details about IIS 6.0 that any windows 2003 administrator would need to know.