Many thanks to the KisMAC developers! I've been building revisions from source for a while now and appreciate the work everyone does!
I just got a WUSB11 2.5 on eBay (for US $17) and it works very well with KisMAC, finding more networks than Airport Extreme passive on my 12" PowerBook. However, I can't join any of the open networks it finds, because I don't have a driver. Google tells me a few people may have gotten it working by hacking the DWL-122 driver. All of the networks around me are too far away to be picked up by Airport Extreme, so I'd like to find a way to join a network with the WUSB11. What do you guys do? Any ideas appreciated.