Setting Up WPA2 Connection in BackTrack

The next thing is to setup my Internet connection. Since I'm using WPA2 at home, and here is the content of my /etc/network/interfaces

auto lo
iface lo inet loopback


auto wlan0
iface wlan0 inet dhcp
wpa-driver wext
wpa-ssid < ssid >
wpa-ap-scan 1
wpa-proto RSN
wpa-pairwise CCMP
wpa-group CCMP
wpa-key-mgmt WPA-PSK WPA-EAP
wpa-psk < hex key generated by wpa_passphase ssid passphase >