CDI files

Where can I download the cdi files to burn a Dreamcast game? I looked on dccopyworld, but all I could find was some pdf stuff. I've searched everywhere I can think of and can't find these with the exception of dreamsnes which didn't even work. I've already gone to internetconvoy and all those sites that say how but none of them say where? I also have looked through nearly all of these posts with no avail.