MECHWARRIOR 4 WON'T READ COPIED DISK

[fredo]

Have copied a back up copy of Mechwarrior 4 on a ricoh Mp 7125a using Nero 5.0.3.1 copy CD , the disk copies and the and replacing the MW4.EXE will start the programme mission breifing , but when I hit the launch button get the mesage STOP. this isn't a data disk. Hitting the details button on the messasge bar , I get the information about my computer coming up.
How do I solve this problem ?