There's no easy way to do it (i.e. you can't just do something like copy the ROM files to CD). In principle it can be done, but would require a ton of hacking for a game like Garou. MVS/AES and NGCD are very similar from a program's perspective, but the memory limitations require that things be done in a way that can be organized into loadable data sets. Cartridge games don't have to deal with this problem.