In this forum there have been many comments about QuoteTracker, a free market price watch program that is available from
http://www.quotetracker.com/
Once installed, you would have to choose NSE India Real-Time (Free) from File -> Select Quote Source. This would fetch stock prices from NSE.
A list of prices to watch needs to be created as a portfolio. This requires symbol names that can be got from
this NSE site link.
I have not managed to get the NSE index values to show in one of the bars towards the top.
Not really real time; but it exceeds my need for speed.
Hope this helps and it relates to your question.