wireless

try:

sudo dhclient ath0

look:

iwconfig ath0

---------------
/etc/network/interfaces

iface wlan0 inet static
address
netmask
gateway
wpa-psk #I entered this in network manager as an alpha-numeric value
wpa-driver wext
wpa-key-mgmt WPA-PSK
wpa-proto WPA2
wpa-ssid

auto wlan0