I'm looking into getting my first reciever but I have a few concerns with the number of component inputs. I like the yamaha rx-v1400/1500 recievers. I have an xbox with monster component cables, but to use surround you need the optical cable. Do I have to run my component cables to the reciever along with the optical cable or can I just use the optical cable to the reciever and my components straight to my TV? Same thing with the denon dvd-1910, the yamaha doesnt have a dvi input on the back so i assume you just run an optical to the reciever?