Aeroporti di Roma
Official guide to both Fiumicino and Ciampino airports featuring timetables, live flight information, interactive maps and more.
http://www.adr.it/

Airwise.com
An introduction to Fiumicino Airport and the facilities it has to offer.
http://www.airwise.com/airports/europe/FCO/index.html

Columbus Guides
Basic information about Fiumicino Airport including telephone numbers, driving directions, maps and information about the facilities there.
http://www.worldairportguide.com/airports/fco/fco.asp