I currently use a Lucent Wavelan Silver in my Lombard 400 in OS9 and OSX (and OS7.6.1 on my PB 190).

It works in OS9 fine with drivers found on the net. With OSX you either have to pay for them (IOxperts) or use beta drivers. I use the beta drivers cause I am cheap.

You can find them at http://sourceforge.net/projects/wirelessdriver/

Beta 6 works with Tiger. If you google, usually you can only find a version that work with 10.2

Now all you need is to get your hand on a compatible card