I tried out the program without the keywhiz connected and it crashed my comp.  From what I saw before it crashed, it looked like you could just program letters A-O.
I tried it out again, properly this time and it turns out it is quite programmable.  WooHoo.
But...
I don't see the windows key and I would like to have that for my cabinet.  Is it possible to use the Windows key with the keywhiz?