FREE AIRTEL GPRS TRICK WITH OPERAMINI 5.1

First of all Download Opera

UPDATE: TRICK EXPIRED
Mini5.1 handler
from the following link.
CLICK HERE
Now open the handler and you can see operator option.In that change
Custom1 to "Mobile Office"
select Custom1
=>Configur-MobileOffice
=>Custom HTTP Server
http://122.170.122.191.server4.operamini.com/
=>Custom SocetServer
122.170.122.191.server4.operamini.com/
=>Back Query(leave it blank)
NOTE:- "Dont REMOVE PORT"
=>Use Proxy http
Use mobile office settings and keep your balance below 30 paise.