Hi stefano,

re:
> PS. Does the custom ui work on trial version, I had a quick go yesterday but got stuck ?

Yes, it does. You would want to get CustomUI.1.03.win.mac.zip , from here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=6507.1

Some more detailed installation instructions at:
http://moi3d.com/forum/index.php?webtag=MOI&msg=9769.4

- Michael