Wait why are you putting the Dreamcast through component? What TV do you have too cuz you should be using DVI or something for your PC instead of component. The way my setup is, I have the four inputs on my switchbox, two inputs on my receiver, and two inputs on my TV. I have three game systems, and a DVD player. All three game systems are piped to the box, which then goes directly to the TV. The DVD player goes directly to the TV as well. I have the option of adding two more component devices, one to the switch and the other by switching to the receiver. However, if I add anything, it'll probably be DVI based. Also if you're hooking a PC up, you should be using that as your DVD player instead of a DVD player.