Heroes of Might & Magic Installation To run the Heroes of Might & Magic demo, switch to the HEROES directory located on the demo CD then type INSTALL. The demo will then be copied to your hard drive. Next, change to your hard drive then type HEROES to run the demo. Should you have any problems running the demo please contact New World Computing’s technical support department at (818) 889-5650, Monday through Friday, 9AM-5PM, PST.