Clone cd and Medal of Honor Pacific Assault

Hello all,
I tried to make a backup copy of Pacific Assault using Clonecd which installs ok but then asks for the original disc.

When copying as it is on dvd I was not given the option to copy game just dvd.

Is there a way around this or a method I need to employ to get the disc to be concidered the real deal?

All help greatfully recieved, please do not use techno lingo as I am a novice and may not comprenday, Many thanks.