Mick wrote:
> # iwlist wlan0 scan
> wlan0     Scan completed :
>           Cell 01 - Address: 00:0C:20:03:3B:C5
>                     ESSID:"The Cairngorm Hotel"
>                     Mode:Master
>                     Frequency:2.437 GHz
>                     Encryption key:off
>                     Extra:tsf=00000004ed7ab5fa


Have you tried:

# iwconfig wlan0 essid "The Cairngorm Hotel"
# dhcpcd wlan0

?

Do you have Windows installed? Do you get an IP address on Windows?

Regards,
Norberto