NikolajAlbrekt: the teacher was a RPG-fan
BreOl72: Don't wanna sound like an ass...but have you considered to ask your teacher?
Sometimes, the easiest (?) solutions are best.
He was my teacher some 12 years ago, I don't know where he is today. I also doubt if I tracked him down 'and' he did not find it weird that my reasons for tracking him down was to figure out what video game I briefly played that one time I visited him, that he vividly remembers what he played at that time 12 years ago, I mean I certainly don't.
Update:
Found a download, its old. It also says the game hardly functioned on Vista, but did barely. I might have to dig up an emulator.