( Note: Changing the system locale to Japanese is required for installing the RTP.) Go to the Administrative tab of the window, click Change system locale, set the system locale to Japanese and reboot the PC. Windows Vista and 7 Change system locale: The Regional and Language Options window can be accessed through the control panel in the start menu. Through locale emulation: Using locale emulation program like Applocale, HP pApplocale, NTLEAS or Locale Emulator without reboot the PC.Go to the Advanced tab of the window, set the system locale to Japanese and reboot the PC. Change system locale: The Regional and Language Options window can be accessed through the control panel in the start menu.A computer with system locale set to Japanese or using the locale emulation program:.