Pro .Net Directory Services Programming

I found this book useful *as an introduction* to programming Directory Services in .NET (and enterprise directories in general). It starts with a brief, but well written overview of what are directory services. The following chapters talk about the .NET and COM APIs used to query and modify the directory objects and schema. If you a are *new* to Active Directory you will find this book useful, but I'm afraid that if you have done already some ASDI or System.DirectoryServices programming, there is not much new material to find here, but I recomend reading it anyway. You must be already fluent in C#, but there are plenty of good C# books, so I found it very adequate that this book does not start with a C# or .NET introduction.My only complaint, is that, although it is advertised in the back cover, there is NO ONLINE CODE TO DOWNLOAD from Apress site. This is annoying, because half of the book is devoted to building a couple of sample applications for managing users and groups and managing Exchange accounts that would be very nice NOT having to type onself. (The 4 star rating does not have anything to do with this, I hope apress to upload the source code soon).In summary: the good points of this book are that it has almost ZERO noise and no dumped-msdn-reference-tables garbage, so it is 100% useful information, and it is easy to read and understand. The week point (for me) it is that it is too short and does not cover ADAM (Active Directory Application Mode).UPDATE: Now the source code book is online on the apress.com site! =)