@ VirtualWorldDynamics: Although it has been a while, thanks for your replies to my earlier comments. I'm pleased that Perception Neuron motion capture interested you.

I don't want to irritate Poser users by mentioning Carrara again but I was interested to see that Fenric provided you with some information. Although he and I have never spoken, I have often heard of him in Carrara forums because he has written a number of brilliant and popular plugins for Carrara. I hope he won't mind me mentioning this. One of the plugins is an MDD file importer and exporter for Carrara which I bought just a few days ago. As well as using your program for Poser I will try to combine using this plugin with the free Python script you mentioned.

In due course, that is - I know that Poser comes first!

Thanks again to those sharing their results.