I saw something at the store about high speed ethernet cords. It had a twisted wire config. to improve communication. I'm hooking up a local network with ps2, iMac and iBook using a Verizon DSL router and hub with these cords. I have a bunch of ethernet cords which I think are all Cat 5 cord, but some have markings like type CM, 5E, type PCC, cable master, patch, etc. (I know what a crossover cable is, but that is about it.) I am wondering if they are high speed and what markings they would have (numbers, letters, etc.) to indicate their speed? I also wonder if it is really necessary? Thanks!