The main Problem everyone told me about GNU/Linux is that they are not possible to connect to internet using their Mobile Phones/GPRS enabled devices.Drivers packed with these devices are intended for Microsoft Windows.Here is a way to connect to Airtel GPRS using your Ubuntu 8.04 (This may support all the GNU/Linux systems).

Open up the terminal. Applications –> Accessories –> Terminal

Path to Terminal

Path to Terminal

Type in the command sudo su. Your prompt respond to your command by asking for your password.Type in your user password.Now you are in the super user mode.

There is a file named wvdial.conf in your /etc.Open that file in any text editor(I recommend vim since it is really flexible) and add the following

[Dialer Defaults]
Init1 = AT+CGDCONT=1, “IP”,”airtelgprs.com”,”",0,0
Init2 = ATQ0V1E1 S0=0 &C1 &D2 +FCLASS=0
Modem Type = USB Modem
Baud = 460800
New PPPD = Yes
Modem = /dev/ttyACM0
Isdn = 0
Phone = *99***1#
Password = xxx
Username = xxx

Save the stuff and quit the editor.Now type the command wvdial from your terminal to connect to airtel gprs.To disconnect the stuff, press Ctrl + C

Methods to edit this file in GUI

While you are in the GUI, press Alt + F2 to get the “Run Application” window. Type gksu nautilius and enter your password to get a nautilus opened for you in the Super user mode.Navigate to etc through the Filesystem. Open the file wvdial.conf using a text editor and paste the stuff given above.

But you may have to type in the command wvdial in the terminal(command line) to connect to GPRS.