Copying SuperBike 2001

[SuperBike]

I've tried all the suggestions already. The problem comes once I've succesfully installed the game, and I need the CD to actually play the game. Once I click on the .exe I get asked to insert the CD into the CD rom. Well, the CD is in the CD rom. I've already burnt three copies of the real copy and used the cracked .exe from gamecopyworld, but the same thing keeps happening. Is almost as if the backup doesn't have some type of file needed for the game to run onve it is installed.
Please help.