Tivo Roamio / MoCA / Mini issue

Hi All,



I'm returning to Tivo after a long, embarrassing absence.



I have verizon FiOS with Coax drops to two locations. I intend to have a Roamio and Mini on the network.



I got the Roamio configured using Ethernet - updated and attached to an account. I don't yet have a CableCard, however. It comes Monday.



I then moved it to a room without ethernet and connected it to the Coax cable. It doesn't seem to think that it has a network connection unless I do wireless.



With it on wireless, the Mini doesn't see it.



I've only had the Roamio registered for 8 hours or so.



Any way I can confirm I can get the Roamio a MoCA connection? I'd prefer not to run Cat5e, but I could.



Thanks!



J