First see if it shows up with;
lets say it is eth1
now lets see if any other interface is up
lets say eth0 shows up
Code:
ifconfig eth0 down
ifconfig eth1 up
iwconfig eth1 essid va721linux <-- put your essid
iwconfig eth1 key 1817161514 <-- put your key if you use one
dhcpcd eth1
ping www.google.com -c 3
something like that ...
what happens?