Hey potamax,
I am using Airtel BX220 on Ubuntu Linux. It is easy to hookup computer with this router/mode.
Setup should be as follows
Code:
PC - Ethernet Cable - Bx220 Modem
Now we can setup networking two ways
===> DHCP
===> Static
Which one you would like to use? DHCP or static ...? Depend upon this you can hookup to Airtel