Using Linux to build your own Soft-AP (Access Point)

Yuo have to choice a wireless card with Intersil Prism chipset.

3Com 3CRWE154G72 (pcmcia)
&
PCI GW-DS54G (pci)
are good choice, because i have tested these two cards, and they do work.

1.mkdir -p /usr/lib/hotplug/firmware
2.cd /usr/lib/hotplug/firmware
3.mount /mnt/cdrom (your wireless card driver)
4.cp /mnt/cdrom/Driver/3CRWE154G72/3C154G72.arm isl3890
(cp /mnt/cdrom/Drivers/XP&2K/WLANDCB.arm isl3890) for GW-DS54G
5.chkconfig pcmcia on (for 3CRWE154G72)
6. /etc/rc.d/rc.local:

modprobe prism54 # only GW-DS54G needed
iwconfig eth1 essid Linux-3Com
iwconfig eth1 channel 7
iwconfig eth1 mode Master
ifconfig eth1 10.1.1.1 netmask 255.255.255.0 broadcast 10.1.1.255 up

7.setup your NAT & DHCP server to privide your clients to get ip
8.reboot
9.test from your wireless client

this is a snapshot of my PDA:
http://www.wretch.cc/album/show.php?i=ywwang&b=3&f=1096222587.jpg&p=1