Ethernet Cable

Verizon (DSL) sent me a new wireless router that only came with an Ethernet cable. The problem is the internet connection can't find the server when using this cable. My old router was one that came with the option of using Ethernet, or USB. It worked fine with the USB, but when I try to put the Ethernet in it won't work eventhough my computer is compatible with both Ethernet and USB. The problem is when I called Verizon they told me that the IP address in the interface card and that I needed an IP configuration. I don't want to pay for that card. So, I decided to call Compaq and they told me it wasn't an interface problem and that the problem was internal. Basically, they said that it's Verizon's fault. They told me to go into my Administrative controls and enable Ethernet, but I did it and my computer still won't recognize it. Any suggestions?