I am guessing he already has the game installed from the original disc?
If so then I am also guessing he wants to play the game from a mounted image?
If that is the case Iori Branford then just mount your 'own image' in a Daemon Tools or a Alcohol 120 virtual drive.
The game wont care what Drive you installed it from as long as the game can see a disc (mounted image) in place it will start.