I just purchased a HT (Sony 840) for the 1st time. I have some basic questions about setup maybe some of you could help me with. I have a tv, dvd, cd and vcr that needs to be hooked up to the receiver. My 1st question is about video hook up. Do I need to hook up video from my dvd and vcr to the receiver ? The manual is showing audio and video cables going from the receiver to the tv, dvd player and vcr. I understand why the audio cables are needed but why the video ? I like the way I can change between tc, vcr, dvd and video games right now, all with one button on my tv remote. (video-1, video-2 and video-3). If I hook up the video cables from my dvd, vcr to the receiver and then fom my receiver to my tv, how will I view my tv, vcr, dvd and video games ? I would like to keep the way I can change between components with one button on tv remote if possible. I am also buying a fiber optic digital cable to connect my dvd to the receiver. Is that the only cable I need for the dvd player (audio and video) ? I am also buying a digital cable to connect my sub-woofer and upgrading the speaker wire. Any recommendations on either of these ? Also, how high should I mount the rear speakers ? Thank you.