I Found a very Interesting Article which will help you all if You are in INDIA
All you need to do is to insert your PNR number of your Railway ticket and Your Mobile Number

You will be Intimated Automatically about the Status of your Reservation

Just visit this Website http://www.mypnrstatus.com/index.php



Source: http://softwaresaddicted.blogspot.com/2010/11/get-free-update-of-railway-tickets-via.html