Looking for system, but need some information, make sure I'm doing this correctly. Want to install at least three wired cameras with ability to add more cameras later. As I understand, first connect wired cameras to the NVR. I'm unable to connect ethernet cable to my computer. I would have to take out walls, celling to connect to my computer and I can't do that. Therefore connect NVR to a rooter that will send signal to my computer. I have a rooter that works throughout the house for internet. So I'm talking about two rooters. One for the house internet and rooter for the NVR to send signal to my computer. Do I have the right idea. Thanks Bob Haggard