If you are running windoze vista or later, install the game, right click on the executable (or the shortcut, think either will work) select properties, and find the compatibility mode tab or widget. From there, find the recommended os/processor combination that matches your game, and apply/ok/done it.
This should get your game running at the speed it was intended.
Good luck,
Go Geek!
That doesn't work. Nor does it emulate old hardware.
Use DOSBOX. It's what it's designed for.