I have an older laptop and Ubuntu does not have drivers for my wireless PCMCIA card. So I found the Windows drivers and loaded them with
ndiswrapper via the Windows Wireless Drivers utility app. I can load the drivers and the card then works fine... no problems at all. The problem is to keep these settings once the machine is shut down or rebooted. At present, the settings are lost if this is done and I have to reinstall the wireless driver every time. I have tried various suggestions on how to keep the settings but so far none of them have worked.
There has to be a configuration file somewhere that contains the wireless setup info but I do not know what or where it is.