lo        no wireless extensions.

eth0      no wireless extensions.

ppp0      no wireless extensions.

wlan0     802.11b/g .....  ESSID:"3 Office BOX"  
          Mode:Managed  Frequency=2.412 GHz  Access Point: 00:FD:07:91:61:AF   
          Bit Rate=11 Mb/s   
          Retry:on   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=0/100  Signal level=0 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0