i wouldn't risk 15 bucks on that. a low end branded one doesn't cost that much more anyways. i got mine for around 40 cdn. so thats 35 USD and i'm quite satisfied with it.
if it says you need a sound card to use a one of these USB powered TV tuners (off tigerdirect) and your sound card is integrated into your motherboard does that count? or do i need a separate sound card?
If it can support windows XP it can support media center correct?