Pootle,
Additional information: If you are not comfortable replacing the hinge pin yourself then you should really consider having a professional replace it. It is easy to do damage to the body of the car if you do not use caution.
I have replaced the upper hinge pins on both of my 1966 beetles, one drivers side and two passenger sides. I felt comfortable performing the job myself so I did it using standard garage tools which consisted of a hammer, a one quarter inch round punch, cardboard and a can of penetrating catalyst.
Hope this additional information helps,
Larry
Enjoy life to the fullest - in a VINTAGE VW