so i want to buy a router/modem because im bout to order cox internet. 100mbps package and want to buy a router so i don't have to pay more a month, is this a good one? it can do wifi and wired internet? http://www.walmart.com/ip/36009477?wmlspartner=wlpa&selectedSellerId=0&adid=22222222227025762580&wl0=&wl1=g&wl2=c&wl3=52376129951&wl4=&wl5=pla&wl6=83939711351&veh=sem#about