Does anyone know if the U.S. versions of the Game Genies for the Genesis and Super NES can be used as passthroughs to enable Japanese games to be played on either system? I know that the N64 Gameshark can be used to get Japanese N64 games to play on American N64s. If anyone has an idea about this, I would appreciate it. I don't particularly want to break the tabs on my Super NES if I can help it.