How can i burn dragon knight.iso for pc engine emu


I downloaded some pc engine games from edonkey. some are with mp3 and some with none. The ones with worked fine. i burn them with nero and other stuff so they work.

the ones only with iso i would like to play (Dragon knight II and III) don't want to go. i burn them with the same program and the emulator load them but only for 2 seconds and then magic engine is back at the super cd rom 2 title screen.

Can anyone help me please???