Current setup is cable TV and Internet run through a cable company provided three-way splitter (5 Mhz -1003 Mhz) TV at each endpoint, modem at one. Works fine since the cable company put in new line.

I have a 10year-old house that is well-wired with COAX, but sadly no Cat5. My cable (COAX) comes into the house at a point in the basement where it then splits via a panel to all of its runs (6 in ...