I want to get a tv tuner so I can watch tv on my computer. I currently have satellite with direct tv and about to get hd with direct tv or dish network. I want to be able to watch the hd stuff on my computer. Would I need an hd reciever box too or just a hd tuner card? After thinking and doing more research I see this isn't an easy task. Have an hd satellite dish and hd reciever from direct tv, the reciever is connected to the dish, I connect the hd reciever to the hd tv tuner card in my computer, would that work?