安装好网卡后,安装 (最新版Ubuntu Server 10.04已集成wpasupplicant)
apt-get install wpasupplicant

生成配置文件:
wpa_passphrase YOUR_SSID YOUR_KEY > /etc/wpa_supplicant.conf

修改/etc/network/interfaces:
auto wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant.conf


(/etc/wpa_supplicant.conf 这个位置可以随便定)