I want to purchase my own modem and not rent from TWC. Also, I want a router so I can get a Roku3 and may get a Ooma. I still have a HP computers using windows xp sp2. I am thinking of buying Motorola SB6141 modem, NetGear WNR2000 router. Do you think all of this will work? Will I need any other equipment besides the Roku3 and Ooma? Joyce