Two questions: first, is the link http://tivo.stevejenkins.com/network_cd.html which refers to the S1 applicable to pull and save shows off of an S3 if you wanted to put them on a new S4? Or is there another procedure to follow? Second, our S3 has a 1 TB "approved" extension drive. Can it be used on the S4 as well? Many thanks for your ideas about these.