I have an offbrand plasma (Hyundai HQP421SR) and I was wondering if I might be able to make more adustments through the serial port than I can through the remote. Of course, I can't find any Hyundai documentation; are serial controls standard across devices, or do I need to hound Hyundai? I found a Zenith (well, LG) manual which has directions on how to hook up a serial control and what commands to send; I imagine I can do this using Girder. But I don't want to guess blindly at the codes. Are these standard? Unlike IR codes, there doesn't seem to be a reason to change them between one brand and another.