|Using Locale you can change language, numeric, time and spellchecking setting for your particular region.|
|If you know something about these preferences then please help us by adding information. Don't worry about formatting. We will help you ensure that your text is properly formatted.|
Specify which language you want to use, how to format numbers, dates, and time and other similar things specific to your country or region. A detailed manual can be found here.
Here you can enter settings for spell checking. There is a detailed manual here
Here you can find the tutorial on installation and applying interface translation using Locale module.