Currently in my house I have two desktop computers and a laptop. I use Comcast as my internet provide. One desktop computer is connected to my wireless router through an ethernet cord. My other computer and laptop are connected wirelessly. I live in a large house so the router only covers half of it. The signal can barely reach my other desktop computer. Can I just buy another Wireless router and plug it into another cable socket in my house? Will there be any pricing increases? Does it matter what kind of router it is?