I've followed the documentation and installed ndiswrapper 1.1. It reports that the driver is installed and that the hardware is present.
Next I use iwconfig to configure the card
iwconfig wlan0 mode Managed
iwconfig wlan0 key resctricted XXXXXXXX
iwconfig wlan0 essid XXXXXXXX
Then I run iwconfig to check the config. Everything is fine except the essid which still says off/any. Running iwconfig wlan0 scan shows my wireless router.
Why can't I set the essid?