I need to run an ethernet connection to a room that is about 100 feet away from my main computer/cable modem. I've tried just using wireless with my Airport Extreme but the connection sometimes gets dropped and also the delay is too long. (I'm running a remote desktop connection for a music app) Does anyone know what works better and is more reliable; a powerline for the ethernet connection or I do have some direct coax tie lines that are hooked up to that back room (No cable TV on these) so would a coax to ethernet adapter work better? This is an old house and I can't just run a new ethernet line back there through the attic etc. Any thoughts? Thanks.