hi...
You may follow the below mentioned steps :
Install New Multilingual User Interface (MUI) in Windows 7:
1. Start -> All Programs --> Windows Update --> Optional Updates.
2. Open optional Updates and go to the section Windows 7 Language Packs.
3. Tick the Multilingual User Interface (MUI) you want and click OK
4. Proceed with Install Updates
How to change the Windows 7 Display Language:
1. Go to Start -> Control Panel -> Clock, Language, and Region / Change the display language
2. Switch the display language in the Choose a display language drop down menu.
3. Click OK
4. Restart for the changes to take effect (this will affect only the user profile under which you are currently logged on).
Note: While I am an Acer employee or contracted employee, my contributions to Acer Community are my own and not representative of Acer or its views.