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Step 4) Duplicate this hair

Poser 6 doesn't have the option to "duplicate".

For users of Poser 6 and lower, if they are using a hair prop, they would have to reparent the first hair to the universe and then load the second hair which would be parented to the head, and then reverse normals on both hair.  I suppose after that you could parent the first hair to the second hair so that they both move together if you need them to.

"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