No problem. First make sure you have the required packages:
Next, lets head over to /usr/src.
sudo apt-get -y install build-essential bin86
sudo apt-get -y install sharutils
sudo apt-get -y install subversion
Lets check out the latest copy of the madwifi drivers (sudo because /usr/src is usually restricted):
And we can try to install
sudo svn checkout http://madwifi-project.org/svn/madwifi/trunk madwifi
If you are prompted to remove old drivers.
sudo make clean
sudo make install
To test it out, type
And if everything goes without errors,
sudo modprobe ath_pci
Add a line at the very end of the file:
sudo gedit /etc/modules
Also remove any ndiswrapper lines you see in that file. If there are any errors compiling hopefully I can help.