I've had FiOS TV for over 3 years now. I have an HD DVR, and three SD set top boxes in upstairs bedrooms. If I get a Multi-room DVR (MRDVR), do I just unplug the current DVR, plug in the MRDVR and it'll work fine throughout the house? Or will I need additional cabling/wiring to make it work properly? I'm planning on upgrading one of the SD set top boxes to HD but not now.
Thanks for any/all help!