If you plan activities on the Intenret or if you are using Windows/2000 you definitly need a DNS.
By Paul Albitz & Cricket Liu
O'reilly & Associates, inc
This book is about DNS and BIND. It gives the reader a fundamental knowledge of the mechanisms used in name resolution on the Internet an how to install and maintain such a system.
This is the book that they all have read!
ISBN 1-56592-010-4