Its an atmel chipset card even though Linksys still claims it works with the linux-wlan.net drivers:
http://atmelwlandriver.sourceforge.net/usbtable.html
You'll have to have the kernel source and headers installed, as well as a compiler, in order to get it to work. This is the only driver package for the tool, its not really easy to get compiled, but once you have it compiled it should work...
Cheers,
Finegan
