These ebuilds come from http://arcong.ath.cx/.
If you have some problems, go to the official site first.
madwifi-ng : Next Generation driver for Atheros based IEEE 802.11a/b/g wireless LAN cards \(with Eeepc support\) ( http://www.madwifi.org/ )
madwifi-ng-tools : Next Generation tools for configuration of Atheros based IEEE 802.11a/b/g wireless LAN cards ( http://www.madwifi.org/ )
ralink-rt2860 : Driver for the RaLink RT2860 wireless chipset ( http://www.ralinktech.com/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zugaina
For Paludis use this rsync : rsync://gentoo.zugaina.org/zugaina-portage
If you have a problem : ycarus(-at-)zugaina.org