You need free Ethernet or USB port on your computer, you would then plug an Ethernet or USB cable into one of those ports and connect the other end of it to a broadband modem. It really is very simple.

If you don't have any spare Ethernet or USB ports, then you will need a hub of some sort, so that you can get more devices connected to your computer. In that case you would have to install the hub on a port, and then plug back in the device(s) to the hub, your conntection to the modem would be made through the hum connected to your computer.

In the attachment (don't know if you can see it), you can see USB ports on the left, and the left of the two ports on the right is an Ethernet port, th eother port is a regular modem port for connecting to a analog telephone modem (really slow internet access).

Hope this helps.