I searched for 'at76' in YaST2 and a package called 'atmel-firmware' shows as being installed. A search for 'at76_usb' gives 'No Results'.
Searching for 'at76_usb' on
Software.openSUSE.org gives several results, but I'm not sure which one I need: at76_usb-kmp-pae or at76_usb-kmp-default?
If I can serve the DVD .iso to OpenSUSE without having to burn it, that sounds like a viable option!