Want to know what words to say or hold back? What body language signifies power, and even where to sit in that important meeting with a potential customer? Janine Driver, body language expert and best-selling author, covered all that in an entertaining session during the recent meeting of the American Architectural Manufacturers Association, which I attended for our sister publication, DWM magazine. "I am going to train you to think like an investigator," she said at the beginning of her session.