Can standard coax cable be used to carry a network connection (i.e, can I connect my Ethernet cable to coax which is already throughout the house)?
Yes. http://www.corinex.com/web/docx.ns […] n_ethernet “Corinex’ CableLAN series of products will work with coax networks intended for TV signal distribution and with or without TV signals on the same cable. Products with similar capabilities should also appear during 2006 that are http://www.mocalliance.org/en/index.asp”MoCA (Multimedia over Coax) compliant.