1. Click on “Start” then “Control Panel”
2. Click on “Clock, Language, and Region”
3. Click on “Regional and Language Options”
4. Click on “Adminstrative”
5. Click on “Change system locale…”
6. Click the drop-down list for “Current system locale:”
7. Select “Japanese (Japan)”
8. Click “Ok”
9. Confirm changes and restart PC.
If Japanese was not in the drop-down list please follow instructions below:
1. Click on “Start” then “Control Panel”
2. Click on “Check for Updates”
3. Click on “View Available Updates”
4. Find “Japanese Language Pack” and install.

21 comments
With applocale you don't need to change locale of whole system, but it doesn't work for some games.
I'm using Windows 7, I assume you use Windows Vista, i think the step is the same, well almost?
1.Go to Control Panel
2.Go to Clock, Language and Region
3.Go to Region and Language
4.Go to Keyboard and Language tab
5.Click Change Keyboard...
6.In the Installed Service box, click on the unwanted Keyboard input language, and click Remove~~
7.????
8.Profit
With all the comments here I had understand that the steps here are the same for windows 7.
I just have a question does this apply to all kinds of windows 7? even starter?
Cuz I'm planning on putting this on my netbook which has a windows 7 starter