probably better suited in the wireless networking forum, but ill reply anyway
what you need is the ndiswrapper ((
http://ndiswrapper.sourceforge.net/))
unpack and make install, you will need your original inf and sys drivers (from the winxp driver cd or download)
once installed, modprobe it (modprobe ndiswrapper) then you will need to set up the card via iwconfig
heres how my setup goes
iwconfig wlan0 ESSID ssid //sets your network SSID replace ssid for yours
iwconfig wlan0 channel # //sets network channel is other than 6, replace #
iwconfig wlan0 key ###### //sets network security key (if you have one)
ifconfig wlan0 up //brings network up
dhcpcd wlan0 //contacts the access point for an ip, if you have dhcp that is, otherwise you need to set your ip manually
if iwconfig or ifconfig arent commands, you need to install wireless-tools (
http://www.hpl.hp.com/personal/Jean_...nux/Tools.html)
hop;e that heklps a little