I'm also interested in finding out more about this machine. Not a lot of info on it out there. The compact 5 seems to be pretty popular for retro fitting, but the concept turn series, well, not so much. Factory has an upgrade path to Windows 7 if it's new enough, but as far as folks doing it from scratch I don;t see much avalaible.
I know the original was a 12K machine, and a new one today is 9K.