I ran speed test and noticed if I did a direct connection from the router to the computer, I wouldn't lose much speed at all, compared to what I was losing with wireless. If worse comes to worse, I'm am going to buy a 'network switch' and connect that to the modem and then connect the network switch to the router...
Modem ----> Network Switch ----> Router
The network switch would be connected to my PC only and the router would still give the wireless to the other laptops in my house.