Quote - I was having no luck trying to create a long hair style on V4 using draping -- the hair goes through parts of the head and shoulders rather than colliding. I gave up for now and played with the millenium cat instead. I see potential with more work and experimenting with tools and textures.

When intersecting the head or body increase the collision distance. This will resolve most problems. Reset the pose, brush a bit to get the hair going in the right direction (otherwise a lot of hair will fall in front of the face), select an appropriate root and hair stiffness and let it all drape. If doesn't go fast enough in the right direction just add a gravity force pointing down and maybe a bit of wind in some direction. If you want to get hair exactly right brush a lot, apply a 1 iteration drape (to get to look more natural and get rid of intersects).