Ok Fluff, assuming that you're on Windows XP (I hate Vista for some unapparant reason) you would go onto Control Panel-Regional and Language Options-Advance-and you would then proceed to change you're non-Unicode settings to Japanese. (If it do not have it installed, have a Windows XP disk ready.) If you happen to have it installed, it would ask you to restart you're computer. Please do so.
MISSION COMPLETE