Yup, I did exactly what you both said and it works perfectly! I wasn't far off with my own playing about, but the two things I was not doing was:
a) adjusting the tension (I kept trying to fiddle about with the Bezier Curves handles!), and
b) targeting the camera to the object (that certainly made life a little easier, except rather than add a null I just used the object as the target itself!!)
But you don't realise how many hours I have wasted on this over a period of time (it's often the simplest of things that causes thte most distress!!!)
Thanks once again,
Kevin McPoland
kevinmcpoland@breathe.com