I need step by step instructions on hire to hardline my laptop to my router/modem. It's all wifi right now, but I need to hardline. I don't have a landline. My modem/router is a Ariss. I was told it's easy, to just run a cord from my laptop to the router/modem. What kind of cord? Telephone? Which slot on the router do I connect to? See... I'm clueless. Please help.