ekj7: The "keep the display properties open" trick worked for me too on WIn7 64-bit. Strange fix. I wonder why this works? What is the display properties doing?
To make this easier, you can make a batch file out of this so that the display properties window opens before launching the game, althoughI don't know how to have it automatically close when you're done.
DESK.CPL
START /W I76.EXE

Aliasalpha: Thats weird, I followed this exactly and I'm still getting zx spectrum flashbacks. It takes a few minutes or needs a full screen effect like the collision shake or explosions to trigger it but I've not finished the training without it messing up.