It probably doesn't help that I don't have an "easy" wifi connection available and I am not very familiar with wifi in general (Linux or Windows). I don't have a laptop with wifi and there are only rumored local free wifi connections. My home wifi uses an ssid, wep, and probably PPPoE authentication, so I don't know how to tell whether the problem is the setup or the card. I can get the Z to recognize both my cards and to provide me with the little connection icon in the tray, but it always fails to connect. It takes longer to fail when I try to use PPPoE and fails within 30 seconds if I take that off.
Maybe it'll help when my sister gets her laptop and I can get more familiar with how wifi works. You can do all the reading up on it that there is out there, but it doesn't help much unless you have the hardware to work with.
Thanks for the Cacko link, speculatrix. I'm guessing I want to get and install first cacko-1.23-kernel-2.4.20.tar.gz then SL-C3100-Qtopia-1.23-1029311005.zip ... ?