Hopefully a simple question. I have a Nvidea Gforce 3 video card.With no Tv tuner Can I buy a cheaper video card that supports a TV tuner without it interfering with the ge force video card.In other words I don't have the money for a top of the line brand new video card but I can afford a cheap video card with a tv tuner for about a hundred bucks But I don't want it to mess up the other card.Thanks