Hi friends,
I found this a Group called "mypaisa" ( http://in.groups.yahoo.com/group/mypaisa ) in Yahoo Groups! ... that provide EOD Data for BSE, NSE & Derivatives at FREE of Cost. They also Provide Historical Data ... For BSE form 1984, NSE from 1994 & Derivatives from 2000. Please go there & have a Look ... I found this Group very helpful. I think this will help you too.
Happy Investing.
Bye.