One of the features of Microsoft Windows 7 is that it is available in multiple languages. This tutorial will show you how to change the language or install new language-packs on your Windows 7 PC.
Note: If you are using the category view, click on Clock, Language and Region.
Click on Change the date, time or number format.
Click on the list labeled Formats to see if your preferred language set is already installed.
Skip steps 2, 3 and 4 if your preferred language is already installed in Windows 7.