As part of my job, I often have to interview prospective VB developers. Time and again, I am amazed at candidates who call themselves experts in COM and do not know the simplest aspects of the technology. Sadly, most books that convey the knowledge in this text are written for C++ developers - and VB itself hides a lot of the detail from its users. This book is a superbly written and fascinating journey under the covers of COM and COM+ - just enough for VB developers to gain the level of knowledge needed to make informed architectural decisions without bamboozling them with pointless forays into C++. You'll never wonder what project compatibility *really* means again... Buy it! If I could, I'd make it compulsory reading!