Hi Robert, Just how exactly did you manage to make 'modelling' appear as a superscript of 'NLP' in your thread heading?  Being somewhat new to computer technology, many things obvious to most seem obscure and arcane to me.  It's almost as if I need to join a secret society to secure access to certain classes of information.  I am not being flip with you.  I am actually quite serious about this.  So how exactly did you do it?  Feel free to respond to me via email if you feel that my question is stupid or irrelevant to the purposes of this forum.  Thanks in advance. regards, e_lie