Thank you for answering me! > Do you have the latest Airport software installed ? Are you running > 10.3.8? I'm running 10.3.8. As for the Airport software, I've just run Software Updater and my system is up to date, so I think I've the last version. > > In System Preferences / Network, select Airport. > The problem is that in Preferences / Network I can't select Airport! I've got only Internal Modem Ethernet Firewire 6 to 4 I re-checked in System Profiler, and, after 40-50 seconds of searching, I got Wireless card type : Airport and nothing else. Alas, I've not the possibility to check wether the problem is in my card or in my PB. In fact the only person I know with a Power Book is... me! Thank you again, Guido