Having read the rave reviews on amazon.com, I purchased this book hoping to find all sorts of interesting information on manipulating the registry programatically. (In particular I have an interest in user accounts and NT security in my current application.) Whilst I'm sure the book is an invaluable source of information for some (hence the two stars, not just one), I personally found that it contained little that wasn't either already obvious to the developer, or that couldn't be found elsewhere fairly easily.For me - something to consume shelf space, and little more.