Do you have Windows? If so, put in the CD and do this:
Start > Settings > Control Panel
Click on the "Regional and Language Settings" icon.
Click on the "Languages" tab.
Click on the "Add" button.
Click on the "Details" button.
Choose "Japanese" from the drop down menu.
Push the "OK" button.
Push the "OK" button on the other prompts and reboot your machine.