How to install Windows Wireless Drivers (Ndiswrapper) in Ubuntu Edgy.

• In order to install ndiswrapper you need a copy the windows drivers for your Wireless ethernet device.
• This is only meant to be installed if your card isn't supported by Ubuntu, check Ubuntu's list of natively supported wireless cards.
• Check ndiswrapper's list of supported wireless cards if your card isn't supported natively, please visit Ndiswrapper's official supported cards list

• Find out if you have acx module loaded. Because acx module interferes with windows driver, we need to remove it if it is found.

lsmod | grep acx

• Remove the acx module if found. It could also be acx_pci or similar. Please Note: New kernel updates will auto load the acx module again. So repeat the following two commands every time the kernel is updated.

sudo rmmod acx
sudo nano /etc/modprobe.d/blacklist

• Add a new list at the end of the file like this:

# drivers wireless ACX
blacklist acx

• Install ndiswrapper and drivers (due to a bug in Edgy, you need to specify ndiswrapper-utils-1.8)

sudo apt-get install ndiswrapper-utils-1.8
sudo ndiswrapper -i /location_of_your_wireless_driver/your_driver.inf
sudo ndiswrapper -l
sudo modprobe ndiswrapper

• Set ndiswrapper to load on startup

sudo ndiswrapper -m
gksudo gedit /etc/modules

• Add the following module to the list

ndiswrapper

• Now you can configure your wireless card with ifconfig and iwconfig.

e.g. Supposing wlan0 is your wireless device.

sudo iwconfig wlan0 essid "AP" key ababababababababab mode Managed
iwconfig

• You sould now be able to see the MAC address of the access point and signal rate.

Ndiswrapper for Broadcom 43xx wireless chipset

• The Broadcom 43xx (bcm43xx) wireless chipset is one of the most common chipsets, so special scripts have been written for it.
• Only follow this if you have a bcm43xx device. To check in the Terminal type:

lspci | grep Broadcom\ Corporation

If it displays a line similar to this,

0000:02:02.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller (rev 03)

you have a Broadcom wireless chipset. Please proceed with the instructions.

• Put the Ubuntu CD that you installed Ubuntu with in the CD drive.
• Download this to the desktop (the Firefox default, so if you haven't changed it, that's where it went/will go).
• In a terminal type

cd ~/Desktop (or wherever you downloaded the file)
tar -xf bcm4318*.tar.gz
sudo ./ndiswrapper_setup

Your wireless chipset should now work. Try rebooting if you have problems. Please see this thread if you have problems: http://ubuntuforums.org/showthread.php?t=197102&highlight=install+ndiswrapper

source: Ubuntuforums.org