In our June 4 ” Mac OS X Diary,” we said that you can’t access the AirPort Base Station via Mac OS X; you have to boot from OS 9.
That’s true. However, if you have John Sevy’s Java based configuration tool you can accomplish this. AirPORT Configurator is a native Mac OS X application that requires no command line. However, you will need AirPort firmware update 1.3 if PPPoE is to be used.
It’s not an OS X clickable item (it must be run from the shell), but it does work without the need to boot into OS 9. And it’s free. Check it out at Sevy’s Interactive Frontiers Web site for more information.
There’s also a good article at MacFixIt worth checking out. It’s entitled “Configure and OS X box to be an AirPort Software Base Station.”