Age of Empires 2 won't run

Hello,

I'm new here because I've got a problem with my AOE2 iso image. I've got the original game here but I decided to make an image (with CDburner XP) of it cuz it's simplier. I mounted it, the game got installed correctly but when I wanna start it, it says "please insert the cd-rom and try again" or something like that. I try with the original CD inserted in the cd drive and that works, but not when it's the image mounted.

I have the latest version of DT lite installed.

thank :)