Any reccomendations for a 12" 1.5 ghz model? I was thinking I could just get an airport card.. and that should work fine.. otherwise any compatible usb adapters?
That model PowerBook came standard with an Airport Extreme card installed.
Check inside the battery compartment. There's a small flap, where you will find the antenna plugged in to the wifi card.
I've heard this one works well: http://www.airlink101.com/products/awll6075.php
Yes, it says that it is for Intel Macs only, but PPC users say it works well with Tiger and Leopard. I don't think wifi adapters should have any trouble with the CPU anyway.