If I want to hook up my DirecTv signal to my computer so that I can have a TV window open while doing other stuff, what's the simplest product that will accomplish this? At this point my DirecTV signal is not HD, but it probably will be at some point in the future. While it might be nice to have the ability to record this signal it's not a priority. Computer is an HP Pavilion a1740n if that matters. Thanks for any suggestions.