Connect your mobile to pc
1)go to network connections > create a new connection >click next >connect to the internet >set up my connection manually >connect using a dial up modem
2)It asks for ISP name, write anything and press enter
3)It asks for phone number, type in *99***1# and press enter
4) click next >next > finish
5)window pops up asking for username and password, just close it for now
6)right click on my computer>manage>device manager>modems> click on your mobile modem , right click on it and go to properties
7)a windows pops up, go to advanced> here in extra settngs, you have to type this +cgdcont=1,"ip","your gprs connection name"
where your gprs connection name is airtelgprs for airtel , aircelgprs for aircel etc
8)after entering the above lines>click ok and close everything
9)Now go to network connections >right click on the one you created just now(it will be under dial up n/ws)>connect
10) a windows pops up asking for username and password, just click on dial , if its a success then you can browse internet on pc using mobile gprs
follow the steps correctly
make sure that you select GPRS setting on your phone and not WAP and note down your GPRS APN which you need to enter in your PC too
This technique is common for all the networks
PS : GPRS SHOULD BE ACTIVATED ON MOBILE FIRST !
good luck