1. lspci | grep Atheros
2. if you have proxy add below in /etc/subversion/servers
http-proxy-host=proxy-host-name-or-ip #can't have space back
http-proxy-port=proxy-port
then
svn checkout http://madwifi -project.org/svn /madwifi /trunk madwifi
3 make
4.make install
5.reboot