no,

basically media center is a version of windows XP.

you need a pc running windows xp media center. if you want to watch tv you need a compliant TV card in your pc. also you may want to buy the USB windows media center remote control.

or if your system is just too old, you could go out and buy an off the shelf pc already running windows media center but they're about £1500.

if you've already got a decent screen or are planning to use a normal tv / Plazma etc... you could make your own for less in my opinion.