The best way to run original Starcraft these days is Wine (implementing windows XP behavior), on OS X or linux. I've done both, it works pretty well. IIRC the

The best way to run original Starcraft these days is Wine (implementing windows XP behavior), on OS X or linux. I've done both, it works pretty well. IIRC the mouse acceleration was sometimes problematic in OS X, you might need one of the many third-party utilities for OS X that let you disable or tweak it, e.g. USB Overdrive, or maybe Smoothmouse would work.