Make sure you have the "prism2_usb" kernel module.
I use the multimedia kernel found in the contrib packages:
2.4.22-10mm.2mdk
Install the "wireless-tools-25" and the "prism2-utils" packages.
Add these two lines to your /etc/modules.conf :
alias wlan0 prism2_usb
options prism2_usb prism2_doreset=0
With the help of linuxconf, make sure there's an entry in the network adaptors dialog, with wlan0 for the network interface, prism2_usb for the kernel module, and dhcp for the configuration mode.
Make sure the wlan service starts automatically:
chkconfig --add wlan
and start the service:
service wlan restart
Plug your wusb interface, wait a couple of seconds, then check if the interface is alive with the "iwconfig" command line tool.
I hope this helps. In any case, check:
http://www.hpl.hp.com/personal/Jean_Tourri...x/Wireless.html