http://crunchbang.org – /etc/network/interfaces (add):auto eth1 iface eth1 inet dhcp wireless-mode Managed wireless-essid WLANName wpa-psk plainpasswordAfter edit restart the network/etc/init.d/networking stop /etc/init.d/networking startor boot the system.While the /etc/network/interfaces contains "eth1" the network-manager could not configure the device. (HowTos)