I don't have it installed for awhile, so forgive me if I don't remember 100%, but it was either under HKCU or HKLM and find the game entry under software/sega, and there will be a region setting that will be JP, change it to EN. But, instead or Romanji you end up with gibberish mostly. Though it fixes some of the menus and stuff so you know what option you are selecting.