You can no longer activate Windows via the internet, you have to ring them to activate it and it also is locked to the main hardware, but allows IIRC upto three changes. Before it locks again.
Part of the reason for the lock codes is to do with the licence for RISC OS IIRC, as laid doen by Pace orginally.
Its MicroDigital at fault here not 3QD/Virtual Acorn, or the product for that matter.
response to Drobe:
As to the comment Virtual Acorn were closed for two weeks in March while they moved, indeed they were closed and obviously could not take phone calls, but they still responded to email unlock code requests I believe.
Of course everyone answers or has a phone while they are in the middle of moving house!
I really wonder why I now bother to stay in the RISC OS world.