First of all, check out
http://www.geniusbydesign.com/other/windocs/brighter/bright.shtml and www.winwenger.com/imstream.htm
You are suppose to tape the ImageStream if you have no one to listen to you, and you can listen to it again to help you interpret it, but you don't have to. Again, see those sites.
Secondly, if you want to pure ImageStream (no questions) then the question you ask is "What is your message for me today?"
The questions are usually something that you don't know yet. For instance, "What is an even better method than PR'ing?" or "How can I improve my time management?"
The gains are many--intelligence, better understanding of things, descriptive, better communication with unconscious, better communication, period. etc.
