Just got linksys wubs11 v2.8 wireless usb adapter to work with a linux 2.6 kernel.
Here's how I did it.
Downloaded the CVS tarball from http://at76c503a.berlios.de/support.html
followed the instructions here: http://at76c503a.berlios.de/cvs.html
You should now have a source tree, cd into it, do a ./Configure, then a "make ; make install".
I added a line "alias wlan0 at76c503-rfmd" to both /etc/modules.conf and /etc/modprobe.conf.
cd into /etc/sysconfig/network-scripts.
copy ifcfg-eth0 to ifcfg-wlan0
edit the ifcfg-wlan0 file and comment out the hardware MAC address line.
run the command: iwconfig wlan0 essid "WLAN"
(looks like a good candidate to put into the /etc/rc.d/init.d/network script
do a /etc/rc.d/init.d/network restart. i
you should be up and running.