You access other data streams all the time. When you sleep for one thing. There is not a good way to explain how you access other data streams than normal PMR. You just Intend to do so, which combines intent to do so with the effects of your Intent which is another of those relatively special words that Tom creates since there are no normal words to cover the desired meaning. Here are a lot of lectures by Tom, created mostly from his posts on the board: http://wiki.my-big-toe.com/index.php/To ... -_Lectures
You might find it of value to read through all of them. How much have you read in Tom's books? This is available on Google books, if you do not have and cannot get a personal copy to read. http://books.google.com/books?id=RYHtBP ... &q&f=false
I'm not putting you off as not wanting to answer your questions. It is just that it seems that there is entirely too much of a gap until you have some more basic information available to you. An answer to questions as you are asking them would likely be more misleading than otherwise. Here is a general overview of what we really are and how things work in general. viewtopic.php?f=17&t=7817
But whether you can get the answer you want from this is uncertain. Please do some reading on the links if you don't tackle the books right yet. Then ask more questions and lets see if we can get you up to speed.