I'll do my best :P
In the while,
after a very short conversation with Peter McConnell on facebook, here's what I got hold on:
This is just a MI2 midi with a VST arrangement, as the title suggests.
But listen to those sounds, do they remind you something?
Yes, I managed to get my hands on some of the virtual instruments used in CMI, EFMI and also in Grim Fandango :O