Fortunatly you dont need to be able to read Japanese as the menu's are all in English, also if its an English bios you're using you wont see any Japanese, I have the Jap one so if you have one thats not your language go to the second option on the main saturn menu & select your language. The bios can go anywhere really, the emu will prompt you to enter its location when you start up, it will then close after you've entered it & whatever other settings you want to change saving the bios location info etc.. start it up again & you're ready to go