Attached Link: http://www.poserfashion.net/vic3_dress1.htm

That link has a great tutorial on dynamic clothing. It's what I used to learn it and it was pretty easy to follow. I'm rather dense when it comes to learning things in poser, so if I can follow a tutorial, you know it's a true "for dummies" one. lol The tutorial at the end does leave something important out. When you get to this point in the tutorial at the bottom:

Quote - Clothify the dress Click collide against, check your figure (Victoria), let the default parameters, uncheck "start draping from pose", check the 3 "ignore collision" boxes. This item have already a constrained group at the front top.

After doing that, go back to the Pose room. Make sure you have the figure as the active item. Change the frame numbers at the bottom as shown (30,60), then apply your figure's pose, then go back to the Cloth room. Make sure your clothing is the active item, and run the simulation. I use the 60 frame animation and start my pose at frame 30 like the tutorial states. Some use a smaller number, but I like the look of the 60 frame so keep using it. Running a simulation takes time, so start it and walk away. It may not look like it's doing anything sometimes... but trust me.. it is :)

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi