Polly po-cket
From the link below click on it and just register your reliance mobile number and the name on which the sim card was purchased.
http://rcom.co.in/rcom/rworld/music/mobileCallerUser_screen1.jsp?plan=postMobileNet

You will get like this 'Thank you for successful registration'. Use reliance 99rs. pack is activated. You will get gprs usage worth Rs.25000/- on your card for 1 month. Before the end of the last day you have to deactivate it.

Check your internet pack is activated or not from here by putting your mobile number and the password you received at the time of registration:
http://rcom.co.in/rcom/rworld/music/MobileAuthentication.jsp?AppID=109&plan=postMobileNet%2099