installation files of a certain cd?
you will have to unzip the iso file with something like ISObuster.
create two folders on the DVD when burning as data.
then copy the files to the seperate folders. when you install, you just point to the folder, or open the folder.
if you want like an AUTOSTART type of dvd for the cd, im not sure if you are capable of doing it on a dvd, though im sure you can, you will need a program that creates that for you. like an interface where you can install the files of the different folders.
if its something like dvd movies or other things, you can probably still do it, im not sure if it will automatically play if you have that set up. however, you can probably still open it in windows media player if you have the proper codecs.