Yes brands such as Harman Kardon, JVC Onkyo and Sony feature up conversion.
I'm not quite sure what you're asking. HDMI cables come with various products such as televisions and video game systems, while HDMI capability comes with certain cable boxes and TVs.
Yes, it has one HDMI connection.
Probably not.
Yes most of the new home theater systems come with integrated amplifiers
4908 a.d
It has to come with your video card.. normally the older models won't have Hdmi ports
Normally it would come from your DVR and go out to 2 TV's. I have not seen a DVR with HDMI in.
I believe the AV should come through the HDMI cable, but I'm no technician...
Under video settings you need to choose hdmi, bit annoying but you have to connect it with the other connection first change the setting and then connect hdmi
Sony Home Theater Systems are not better or worse than other brands. It's up to the individual to decide; however, Sony has a long history of making electronics, and thus have years of experience in quality.
There are people who work at stores that sell the home theater systems that would be able to help you with your set up. Some of them even offer to come to your home and do it for a fee.
DVI/HDMI cables typically come in lengths of three or five meters. Five meters, or about 16.4 feet, is usually regarded as the official limit on such cables.