Is there any way to improve the quality of the picture when using Dish? When viewing the programs through Dish, they are HD quality, but I can't seem to figure out how to get HD quality programming through TiVo. I have an older TiVo box that isn't specifically HD. Also, I can't figure out how to connect it so I can watch something live through Dish while recording on another channel. Before we switched to Dish, I used a splitter on my cable and it worked great. Now, I am not sure how to do it. Any help would be GREATLY appreciated.