Several people asked me for the info on the books I showed in Pisa. Here it is: The Internet System Handbook, editors D. Lynch and M. Rose, Addison Wesley, ISBN 0-201-56741-5 The Internet Message, Marshall T. Rose, Prentice Hall, ISBN 0-13-092941-7 Exploring the Internet (the travel book), Carl Malamud, Prentice Hall, ISBN 0-13-296898-3 DNS and BIND, P. Albitz and C. Liu, O`Reilly & ass., ISBN 1-56592-010-4 Erik