I had Dish Network installed a couple of days ago because they told me it worked with TiVo. Come to find out, it doesn't work with my series 3 hd TiVo. This is correct, right? If I switch to Direct TV will that work with my current series 3 HD TiVo and my series 2 non hd TiVo. These are regular TiVo's, not direct tv TiVo's. I really appreciate any help.