Sony Vaio VGN-S580/etc/wpa supplicant.conf

ctrl_interface=/var/run/wpa_supplicant
update_config=1

network={
        ssid="aaa-123"
        psk="123"
        proto=WPA
        key_mgmt=WPA-PSK
        pairwise=TKIP
        group=TKIP WEP104 WEP40
        priority=10
}

network={
        ssid="bbb-456"
        psk="456"
        proto=WPA
        key_mgmt=WPA-PSK
        pairwise=CCMP
        priority=10

}

network={
        ssid=""
        key_mgmt=NONE
        priority=3
}