Comment 23 for bug 203958

Whether or not the b43 driver works for you, at this point ndiswrapper still gives better performance.

To install the driver through ndiswrapper:

'sudo aptitude install cabextract ndisgtk'
Download the .exe file that installs the driver in Windows.
'cabextract [location of the .exe file]'
This will extract the drivers from the executable.

Now just run ndisgtk from either the main menu or with 'sudo ndisgtk' and browse to the .inf file that was extracted.
OR
'sudo ndiswrapper –i [location of the .inf file]'

'echo ndiswrapper | sudo tee -a /etc/modules && sudo modprobe ndiswrapper'