I dont really deal with all that non-sense for my DC emulation. All of my roms are bin/cue and seem to load fine? Now granted it helps to know were to find good roms and of course its suggested you dump you own game
Though, that aside I dont know much more about how to self boot roms and strongly encourage one to find a set that already has bootable roms.
I think the DC scene mainly goes to segastyle.com for info. but its been dead for so long now that no one needs to do that any more. If you burned a game without doing the self boot you can try
this pages as well but its possible all links are broken.