robineiro@robineiro-laptop:~$ iwlist eth1 scan
eth1      Scan completed :
          Cell 01 - Address: 00:12:88:93:66:31
                    ESSID:"Fuentes"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Channel:1
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=62/100  Signal level=-79 dBm  Noise level=-70 dBm
                    Extra: Last beacon: 44ms ago

robineiro@robineiro-laptop:~$ iwconfig eth1
eth1      IEEE 802.11b/g  ESSID:"Fuentes"  Nickname:"Broadcom 4318"
          Mode:Managed  Frequency=2.412 GHz  Access Point: Invalid   
          Bit Rate=1 Mb/s   Tx-Power=18 dBm   
          RTS thr:off   Fragment thr:off
          Link Quality=0/100  Signal level=-256 dBm  Noise level=-256 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

root@robineiro-laptop:/home/robineiro# iwconfig eth1 essid "Fuentes" key "1059-9971-26"
root@robineiro-laptop:/home/robineiro# dhclient eth1
There is already a pid file /var/run/dhclient.pid with pid 6516
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth1/00:14:a5:7d:b3:fa
Sending on   LPF/eth1/00:14:a5:7d:b3:fa
Sending on   Socket/fallback
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 3
No DHCPOFFERS received.
No working leases in persistent database - sleeping.