Hi Roger, I tried wpa_supplicant alone. But it didnt work out. I think wpa_supplicant do not support IPW2200 (Intel Pro wireless 2200 BG driver). So i tried your way. 1. Removed the ipw2200 driver which i installed before. 2. Updated the kernel from 2.6.9-1.667 to 2.6.9-1.667-stk16 (now stack is 16K). 3. Downloaded the windows XP driver(8.1.1.0) for my INtel pro wireless card from sourceforge.net site. 4. Then downloaded the NDISWrapper 0.11 and installed the driver. 5. ndiswrapper -l displayed Installed ndis drivers: w22n51 driver present, hardware present 6. Checked the system log by dmesg: (I think that also works fine.. i saw wlan0 driver loaded and i could see the mac address also) 7. Compiled the wpa_supplicant (0.2.5.tar.gz) and installed it successfully. (created a conf file as given in ndiswrapper website). anyway i have given here: (/etc/wpa_supplicant.conf) --------------- ctrl_interface=/var/run/wpa_supplicant # for wpa_cli support network={ ssid="Madhan" psk="my_password" key_mgmt=WPA-PSK proto=WPA } --------------- 8. typed: ifconfig wlan0 up 9. then typed: wpa_supplicant -Dndiswrapper -iwlan0 -c/etc/wpa_supplicant.conf -d I think i get some authentication time out: (output is here) ----------------------------------------------------------- Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf' Reading configuration file '/etc/wpa_supplicant.conf' ctrl_interface='/var/run/wpa_supplicant' Priority group 0 id=0 ssid='Madhan' Setting scan request: 0 sec 100000 usec Starting AP scan (broadcast SSID) Scan timeout - try to get results Received 306 bytes of scan results (1 BSSes) Scan results: 1 Selecting BSS from priority group 0 0: 00:11:95:2d:06:f2 ssid='Madhan' wpa_ie_len=24 rsn_ie_len=0 selected Trying to associate with 00:11:95:2d:06:f2 (SSID='Madhan' freq=2457 MHz) Cancelling scan request WPA: using IEEE 802.11i/D3.0 WPA: Own WPA IE - hexdump(len=24): dd 16 00 50 f2 01 01 00 00 50 f2 02 01 00 00 50 f2 02 01 00 00 50 f2 02 Setting authentication timeout: 5 sec 0 usec Wireless event: cmd=0x8c02 len=123 Custom wireless event: 'ASSOCINFO(ReqIEs=dd180050f20101000050f20201000050f202010 00050f2022a00 RespIEs=010482848b9632080c1218243048606c)' Association info event req_ies - hexdump(len=26): dd 18 00 50 f2 01 01 00 00 50 f2 02 01 00 00 50 f2 02 01 00 00 50 f2 02 2a 00 assoc_wpa_ie - hexdump(len=26): dd 18 00 50 f2 01 01 00 00 50 f2 02 01 00 00 50 f2 02 01 00 00 50 f2 02 2a 00 ... ... ... ------------------------------------------------------------------ Even i tried dhclient also: dhclient wlan0: ---------------------------------------------- [root@localhost win-intel-driver]# dhclient wlan0 Internet Systems Consortium DHCP Client V3.0.1 Copyright 2004 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/products/DHCP sit0: unknown hardware address type 776 sit0: unknown hardware address type 776 Listening on LPF/wlan0/00:0e:35:5b:52:99 Sending on LPF/wlan0/00:0e:35:5b:52:99 Sending on Socket/fallback DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 4 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 11 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 16 No DHCPOFFERS received. No working leases in persistent database - sleeping. ------------------------------------------------------------------- This is what i got with (a) iwconfig wlan0 and (b) iwlist wlan0 scan --------------------------------------------------------------------- [root@localhost]# iwconfig wlan0 wlan0 IEEE 802.11g ESSID:off/any Mode:Managed Frequency:2.462GHz Access Point: 00:00:00:00:00:00 Bit Rate:54Mb/s RTS thr:1600 B Fragment thr:2304 B Encryption key:off Power Management:off Link Quality:15/100 Signal level:24/154 Noise level:0/154 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 [root@localhost]# iwlist wlan0 scan wlan0 Scan completed : Cell 01 - Address: 00:11:95:2D:06:F2 ESSID:"Madhan" Protocol:IEEE 802.11g Mode:Managed Frequency:2.457GHz (Channel 10) Quality:0/100 Signal level:-26 dBm Noise level:-256 dBm Encryption key:on Bit Rate:1Mb/s Bit Rate:2Mb/s Bit Rate:5.5Mb/s Bit Rate:11Mb/s Bit Rate:6Mb/s Bit Rate:9Mb/s Bit Rate:12Mb/s Bit Rate:18Mb/s Bit Rate:24Mb/s Bit Rate:36Mb/s Bit Rate:48Mb/s Bit Rate:54Mb/s Extra:bcn_int=100 Extra:atim=0 Extra:wpa_ie=dd160050f20101000050f20201000050f20201000050f202 --------------------------------------------------------------- Here is my configuration file: (/etc/sysconfig/net..../ifcfg-wlan0) ---------------------------------------------- IPV6INIT=no ONBOOT=no USERCTL=no PEERDNS=yes GATEWAY= TYPE=Wireless DEVICE=wlan0 HWADDR=00:0e:35:5b:52:99 BOOTPROTO=dhcp NETMASK= DHCP_HOSTNAME= IPADDR= DOMAIN= ESSID=Madhan CHANNEL=10 MODE=Managed RATE=54Mb/s ------------------------------------------------- I know i pasted too much of output and it is clumsy.. bear with me. Do you have any idea what went wrong ?? Please help me out.. Thanks Madhan