Hmmm. I did not have to unlock mine. The version I downloaded was not locked to a specific device. It was a simple matter of extracting the file I needed and adding to the GMPC folder. My SW did not reset and need re-registration either.
I must have been lucky.
As far as windows 8 support I have been busy so I have not been able to work further on getting Microsoft Anna to Windows 8 but it is still something I will look into.