Just to reiterate some things mentioned above, from my own experience...
- Plan on a patch panel, and probably a switch in an accessible location. I put a 24 port patch panel & switch in the garage that everything in the house eventually runs through.
- Run lots of Ethernet cable to anywhere in the house you can access and/or may need access to in the future. When in doubt, pull extras. 10 of the 24 ports are in use.... should have pulled more before I insulated the attic. Even added a 4plex of cat5 ports to the office... probably should have done 6
- Leave coax wherever it is... you never know. Though the sat DVR needed 'better' coax pulled than the existing land based service.
- The modular wall plates are awesome... my living room is 3 cat5 (one to the patch panel & switch, the other 2 returning) and 2 coax (one for the modem the other for the sat DVR) and one spare port. Other rooms are multiple cat5 with room to spare.
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