A frequent question on this forum, particularly from people who have just bought new wireless equipment they're trying to get to work with their AirPort network, is how to get those darn WEP keys to work.
While stumbling around today, I chances on a Mac OS tool for generating WEP keys. You can find it
here on Ziff Davis' ZDNet site. It looks like it is just the ticket for folks with a combination of Apple and other vendors' wireless equipment.