mv /etc/init.d/S35firewall /etc/init.d/fw-backup
nvram set 

lan_ifname=br0
lan_ifnames=vlan0
wifi_ifnames=eth1

wifi_proto=dhcp
lan_proto=static

lan_ipaddr=192.168.1.160

nvram commit
reboot

iwlist eth1 scanning
get the ap details 

ifdown wifi
nvram set wl0_ssid=someapname
nvram set wl0_channel=xx
ifup wifi; /sbin/wifi