If you use component connections, without up conversion, all sources; your DVD, cable box, and receiver have to be joined by component video cables. I don't believe you can mix connections. Do you have to have a component video to your TV? To avoid switching inputs on your TV, you could route everything through your receiver. You could run an SVideo cable from your cable box to the receiver's DTV\cable in, and an SVideo cable from your DVD video out to your reciever's DVD video in. Then run an SVideo cable from your receiver's monotor out to your TV video in. When you switch the TV to video input it will be pointing to the receiver. You can then switch to DVD or cable box on the receiver. I'm using SVideo cables as an example, you could use composite video cables just as easily. I hope this answers your question.