I have been using GKIR-XP by BoomSmurf (who seems to have gone under ground) for Girder 3, since that can distinguish between three different keypads connected to the computer (one Trust, one Case Logic and one Logitech BlueTooth). It works under G 4 as well, but Girder crashes on every exit (there has been problems with GKIR-XP under Girder 3.3 as well, with "Memory could not be read" with unrelated programs and windows when it's running). So as you may understand, I can't use that.
But I discovered that the HID plug-in saw my two USB keypads as separate devices, so I think this may be it. I'm crossing my fingers hoping this may be it! Can somebody please tell me how I learn with that? Clicking "Learn" only learns the keyboard codes.