I have an older Toshiba tv, by that i mean at least 10 years or older. It is a flatscreen monitor on the larger size. Will a roku express work on this one, as we have the roku ultra on the downstairs tv. Or is there a way to get the roku system from downstairs to also work on our upstairs tv, the toshiba one? I am ready to purchase this but need to make sure i am purchasing the correct one...Thank You...