Thanks for the useful information and tutorial Van B. Unfortunately the insanesoftware.de site is down but I found a working link to the software here:
http://characterfx.software.informer.com/
Also found the instructions on how to register the free version. After installing, click on Help from the menu then Register and use the details below:
Quote: "From now on, CharacterFX is available as Freeware - you can use it free of charge, without any restrictions, for as long as you like. If CharacterFX asks you to register, you can use the following registration details to continue using it free of charge:
Username: CFX4FREE
Registration Key: 5b2fe4"
Edit - Confirmed working. I've installed and registered this myself now.