What kind of format is that?
 

I need to burn a PSX iso, problem is I have no idea what program to use for this format. The file is a .cdr format, which I have never seen before, every burning program has failed top open it, the only program that has been able to open it is Isobuster and that program is for extracting files from images, not burning them.

The same program that YOU used to make the file.