original airport base station's card???

[Ken Sp.]

If you use it in OSX you will need drivers.

Drivers $20 here
http://www.ioxperts.com/pr/2003/0305.html

These drivers are older--but should work--Free
http://wirelessdriver.sourceforge.net/

http://www.powerbookwireless.net/

For $21 shipped you can get a card that works natively in OSX
http://cgi.ebay.com/Motorola-WN825G-Wire...dZViewItem

For OSX the card needs a Broadcom chip, and it will appear and act like a regular internal Airport card with no drivers.