That depends on the broadband hardware and IP service you are using.
Ethernet card (or some other network card) connected to cable modem.
Ethernet card connected to router (includes wireless) connected to satellite service.
With ethernet card connected to wireless router connected to antenna aimed at transmiting antenna for my local wireless internet service, I need to set up the DHCP client (IP provides DHCP server).
Cable modem and satellite connections are probably different from my setup.
Write down the information for your hardware (make and model). If you have internet through m$windows, point your browser at www.google.com/linux
, then do some research relative to your kind of connection and the software setup to get it working.