You won't have an interference problem so don't even worry about it. HDMI is a digital interface and that makes it even more immune.
What I would worry about is changing the HDMI cable or adding something else later (there are several inputs you know). I would run smurf tube from the back of the monitor to where it comes out by the cable box. Make it large enough to get component cables with their RCA plugs through as well a a couple of HDMIs.
Last edited by hbiss; 11/20/08 07:17 PM.