Hi. Having the same issue. I'm on live Knoppix 5 using WUSB54GS. Loaded drivers for the card. On ndiswrapper -l i get driver and hardware present. When I go to modprobe ndiswrapper i get FATAL: Error inserting ndiswrapper (/lib/modules/2.6.17/misc/ndiswrapper.ko) Invalid argument.

Hope there's a solution to this. This error happens with a lot of other WiFi cards, so at least it's not the hardware and driver combination, something's got to be up with ndiswrapper...
S