This book is usefull if you want to spend 3x the cover price to write an internet app. The custom control that the author used is pricy. For the money you could buy a good book on winsock programming (or a set of them)!To the authors credit this book is a well written reference on what commands internet servers are expecting and what to expect for responses, and for that alone it deserves three stars.
Personally, I would have prefered if the author had put the primary focus on using the controls/tools that came with VB (the winsock control is not that difficult to use), and not some third party control that will cost you extra to really use.
If you need a reference of commands and responses and a general introduction to internet programming, this is a good book. If you are looking to publish applications then you're better off looking somewhere else.