I have an SD Directivo with 2 separate lines from the dish connected. I want to get a Directv HD receiver. I understand that you cannot split a single line and connect it to the two inputs on the directivo, but can you split one of the lines and connect one to the directivo and one to the hd receiver? How can I watch directv HD on my HDtv and keep my sd directivo? I do not want to spend $1,000 on a HDDVR, so that is out of the question.