I bought all the MCSE books so I could learn how to setup Microsoft 2000 and SBS servers for our company and I couldn't figure much out. They gave me great textbook knowledge but only in a very abstract way.
I went through Harry's book and leaned more in 2 days than 2 months with the MCSE books. This book is worth more than the $ I spent on all the other books combined.
Harry's style is interesting and easy to read. Real life and fictional examples show you what you should and should not do. Actual diagrams of network topology were very helpful as well. I have not run into a situation where he does not cover something I am interested in or that I need to know.
If you are going to setup a SBS you have to get this book no matter how much you know!