Lost connection

After reading how fickle WEP eencryption really was whilst reading the
PC mags in Tescos , whilst the wife was shopping...... phew ! i
decided to use WPA PSK instead , with a mega PW which should take 3
times the age of the universe to crack .

All was well . My little Tescos Zoom Adaptor connected the Laptop to
the SWBAR router instantly but the Mercury WL531 wireless network card
on another PC refuses to see the router . I scan for available
wireless networks and it finds nothing . Is it the new encryption that
hides it from view .

The card is installed ok but it does tell me its not swithced on ?

How the bloody hell do you switch it on ? , i never switched it off !!