The latest copy of David Hinds' Card Services can be found at ftp://pcmcia.sourceforge.org/pcmcia/.
Corey Thomas' latest drivers for the Aviator cards can be found at http://world.std.com/~corey/raylink.html.
Information on the Webgear Aviator cards is at http://www.webgear.com/.
The brcfg utility can be found at ftp://shadow.cabi.net/pub/Linux/BRCFG.tgz.
Detailed information on Linux and Wireless LANs (along with a Wireless LAN HOWTO) can be found at http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/.