Hey,
Well, it is a request for information petition. You can file it at many places including your local post office. Here is a link I found online in case you want to know more- http://trak.in/tags/business/2011/12/01/rti-how-to-file-where-how-who-why/.
My uncle wanted a 'no record of marriage' from the registrar's office. All he did was write the name of the bride and groom, date and place of marriage and asked if said marriage was registered. He made the request on plain white paper. Had to pay 10 rupees along with the application. He got a piece of paper from the registrar's office that said 'no record found of said marriage' in 45 days. He had to pay Rs 5 for the paper in which the information was printed.