Hi guys I really need someones help I have been trying all day to setup my Modem for Vdsl but no success when I plug in the ethernet to wan port into the back of pc I get the internet light blinking but if i take it out of these put into lan light goes off but even plugged into wan and into back of pc I get error at local area connection that says "Local Area Connection" Doesnt have a valid Ip configuration

Please help me I really want this to work