Beetroot should download this manual:
http://www.the-pred.co.uk/index.php?...y_view&iden=25
Little more than halfway thrue, there´s a topic called setup tips.
Think it will give you answears(sp?) to almost all your questions.
And no, I don´t own a X10, but Im thinking about buying one.
Always checking out all manuals and other stuff before I buy something.