Almost all distributors of HD content have digital restrictions on such.
Be sure to learn more so you don't spend money and find out later you can't do this.
I am looking for a media center pc I can use as a dvr too. I want one with at least 500 gb hd, and want to record hidef so it should have an hdmi outputto hook up to lcd tv. i have direct tv hi def boxes. anybody have a good suggestion?