I just got HDTV installed on my brand new Dell 2405fpw monitor. It looks great except for a few lines in the picture on some of the HD channels. The cable guy said to get a sheet of Dynamat to put behind the monitor to eliminate the digital "noise" aka the lines on the screen. My question is, I've done a lot of searching on dynamat and they seem to be used mainly for sound systems, so will using it to improve my HD picture work? I wish I knew more about this when the cable guy was here so I could find out for sure. Also, does anyone know any good places (perhaps some sponsers) to get the Dynamat? Thanks.