Need help configuring wireless PCI card(D-Link DWL-520+) on Redhat 9.0

I already have the wireless adapter installed with the help of sourceforge.net/projects/acx100/

This is an error that I receive when I do 'ifup eth1':
-----
Error for wireless request "Set Encode" (8B2A) :
SET failed on device eth1 ; Operation not supported.

Determining IP information for eth1... failed.
-----

I'm not using a key for my access point and my ifcfg-eth1 file seems to have the correct information

USERCTL=yes
PEERDNS=yes
GATEWAY=192.168.0.1
TYPE=Wireless
DEVICE=eth1
BOOTPROTO=dhcp
NETMASK=255.255.255.0
ONBOOT=yes
NETWORK=192.168.0.0
BROADCAST=192.168.0.255
WIRELESS=yes
ESSID=HaX
MODE=2
DOMAIN=
HWADDR=
DHCP_HOSTNAME=
KEY=
RATE=Auto
CHANNEL=6

Am I missing anything? Anything wrong?