I generally separate high voltage, low voltage and radio signal cables from each other. Usually inches/double cm will do since the strength is exponecial. Daniel Wysocki Twin*.*Star Computers ---------- From: [log in to unmask] [SMTP:[log in to unmask]] Not to be argumentative, but, what about interference? In audio systems, about the modem lines, speaker lines? Shouldn't they be separated from the rest? I have bundled them all together before also but have been curious about this. The interference may be negligible and I have no way of measuring it, but in a game of every bit of performance counts, like computing, wouldn't it be better to separate some of the cables from others? PCBUILD's List Owner's: Bob Wright<[log in to unmask]> Drew Dunn<[log in to unmask]>