Oh man, that reminds me of the time I tried to get Operation: Weather Disaster (ah, nostalgia!) running on a "modern" computer (win98 or xp, vs the intended '95 I think). After much foolery with compatibility settings, I finally got it to work, and it played great... until the final boss fight. It ran so impossibly fast that I would have to be one of those reinforcement AIs to actually succeed. Must have been tied to clock speed.