No, I still haven't found it. Unfortunately I have read supertrini's last reply too late, since the link he posted isn't working anymore (demu.org is currently down) - I have contacted the site owner to ask him whether he knows this game, since I'm pretty sure he has played lots of obscure DOS shareware games (at least judging by the number of games that were indexed in his site).
I'm relieved to see that someone else remembers this game, though, since it means I'm not imagining things
