Does the PCMCIA card fully insert? It's just possible your Toshiba (like an old one I have) needs a 16 bit PCMCIA card rather than the newer 32 bit PC Card. The newer cards won't insert fully into the 16 bit slots. That would explain why you can see the PCMCIA slots but the PCMCIA card isn't recognised as it's not fully inserting. You can still pick up old 16 bit PCMCIA WiFi cards on ebay for a few £'s. My very old Tosh Satellite 3400 works well with a Netgear 16 bit PCMCIA card under XP. One other solution is to use a USB WiFi dongle.