pls explain the indicwriter module installing steps for indian languages

Hi and welcome, Vinayakpai!

Download it from:
www.softnweb.com/download-indic-writer.html?view=document

Then unzip the zipped file and within it you'll find all the individual extensions. Go to your Admin Area >> Extensions >> Extension Manager >> install the individual extension that you'd like to use (as you would any extension). Once installed, you'll see directions for the extension on the "Success" page.

Hope this helps! Let us know if you have any questions.

Kind regards,
Nick