XBOX (1) Emulator help...

So I just bough a classic XBOX (1) with a tons of burned games which most of them are games i never will play trough,because I hate sport games.
Anyway,I just downloaded Surreal64 CE and added some roms in the ROMS folder.Now my question is HOW THE HELL DO I ADD IT TO MY BOX?
My XBOX has a Xecuter2 chip build in,so I can play games on DVD.I tried to make a ISO out of the surreal folder and burned it on a normal CD.
My XBOX wont read it trough.
Now my question is,do I need to burn it on a DVD-Rs?
Or do i need to do something else?