Sorry to bump this thread, but this just happened to me. I rebooted my PC, and all of a sudden my right Alt button became my Windows key and my <> keys became Alt. However, I have all of the dip switches set to 'on' and I changed nothing--this simply happened out of the blue.
All of the other keys seem to be fine, but none of the dipswitch settings work, and I can't get Alt to actually behave as Alt. WTF?