I've spent the last few days reading the whole thread and it's been very enlightening. I'd like to thank TU for starting it and him and others for all the discussion and explanations.
RR/AVRT seems such a simple yet effective solution to addiction problems and I'm so glad I found it.
I've done the crash course on the RR site and have ordered the book.
(TU, could you send me the links you mentioned. I couldn't PM you as I've just joined.)