I know what NetGear is talking about. Basically you realize that you are dreaming while you are dreaming. Once you realize this, you can somewhat control what you dream about.
Its not really something concious you do though.
For example. Say you are dreaming that you are sailing on a yacht. All of a sudden, it becomes a space ship. Well, this clues you in that its not really happening and its a dream. Then say you want to change the spaceship you are riding in. Well, since you know its a dream, you can make that happen.
I have done it once, I had a dream I was running away from some people but my legs were only moving at half speed. Subconciously I realized it was a dream. Then I thought, "Its a dream, I will just fly away". And that is what I did.