MOBO: http://www.newegg.com/Product/Product.aspx?Item=N82E16813131767
does this motherboard come with a wireless reciever or do i have to plug in a enthernet cable?

It doesn't look like it has a wireless reciever, no.

You could buy a PCI or USB based wireless adapter. They are usually around $30-$50. But if for gaming or media streaming, a wired connection is a much better plan.