These cheats are command line parameters.
Just add them to the DOS prompt to start
the game with the cheats active.  For example,
use MEGARACE SPEED MONEY MAP to start the game
with all of those cheats.

SPEED           Faster car
MONEY           99,999 Money when you start a new game
MAP             Shows map of the track while racing
GAME            Skip the intro
NOLANCE         Skip Lance Boyle