Flight Simulator 2004

I have the 4 .iso images. I used deamon to install the game & that worked fine. Now I can’t start the game. You need to have cd-rom 4 in the drive to run the game. The computer tells me it can’t find cd-rom.
I’ve burnt the image cd4.iso using nero burning rom to a cd-r & it still won’t work.
Has anyone had the same problem? Any solutions would be greatly apprieciated.