Thanks for your help! Sadly, I seem to be making things worse. I applied the patch, and I got the expected message in the /var/log/messages file, but usb-0 (or any new network connection) refused to appear, and attempts to synch resulting in a wildly flashing Zaurus.
I then tried updating my kernel from 2.4.20 to 2.4.21, as apparently it does not need the patch, which resulted in the message in /var/log/messages vanishing (and temporary loss of klauncher, and some kind of libGL error when I open YaST -- perhaps I need to upgrade the GLX driver thing now??).
I\'ve done all the steps described in your document, and still nothing. The modules that are described as necessary in the ZUG howto (usbcore, usb-uhci, and usbnet) all appear (lsmod) without having to be installed individually. Is there some other driver that is missing? Again, thanks for any and all help.