Changing other versions' Matlab to English (in Windows 7)

I installed non English version of Matlab and wanted to change in English version. Help in Matlab help is not in English. For those who wants to change version, I am writing in English. Follow the steps below.

- Go to Start -> Control Panel -> System  -> Advanced System Settings
- Click on Environment Variables
- Click on "New" in "User variables"
   - In "Variable name:" type MWLOCALE_TRANSLATED
   - In "Variable value:" type OFF
- Click on "New" in "System variables"
   - In "Variable name:" type MWLOCALE_TRANSLATED
   - In "Variable value:" type OFF

Click on OK