I finally figured out how to instal the decoder on my own BUT now I can not change the address from the default 03. I emailed digitrax and they said [and I quote]: "You cannot change the address of a Tsunami with the DCS100/200 without Soundtraxx's Program booster". So I am screwed here. And soundtrax says NOTHING about needing extra anything on their website in order to change the addresses on thier decoders. Unless someone knows what buttons to press on the superchief to change the address I will have a 600 dollar dud on my hands. If I had known it was gonna be this difficult to get answers and help from soundtraxx and digitrax and bachmann I never would have gone into DCC. This so annoying I don't know what to say. So any help would be appreciated thanks.