LOL! Basically, for most of us, it's just a different way to conform clothing when you change a figure's pose. In Poser 4: add figure, add clothes, conform clothes, pose figure and the clothes go with it. Do another pose, and the clothes go with that pose too. In Poser 5: add figure, add dynamic clothes, set up an animation with the pose you want your figure to be in as a frame towards the end. Do the clothroom/calculate thing. That will fit the clothes to the figures new position. But if you decide you don't like the figure's pose you have to start all over. You can't just change the pose like with conforming clothes. When it works right, the clothes hang great. But it's a lot of work...more than I'm willing to do on an everyday basis.