DLINK Router Connections

[Paradise]

Recently, had too replace our Modem cause, it would no longer connect all the time and was too old.  I have a cable that runs from the New Modem too the Router Internet Port and one from the PC's to the computer.  I put in all the settings that I remember it having and won't forward the connection too it.  D-Link DIR-628

[patio]

Modem------------Router-----------------PC.

[Geek-9pm]

Who replaced the modem?
 Do you know the modem works?
Did you consult your local service provider?
Can you get internet by going direct from Modem to PC?

Some service providers set the modem to look for the user's MAC .

A media access control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet