OK - thanks for your patience.
I really should know this stuff by now !!
Anyway, so the answer is,
If I want to center my page - I NEED to give it a width ?
So If I choose, say 1200px.
For 90 % of monitors, I guess that will be OK ?
EDIT: Well, just tried that on mine and the image was not centered
but over to the LEFT hand side.
I changed the width to 1000px and now, on my monitor, it looks centered.
Don't know about others though
If you want to attract and keep more clients, then offer great customer support
automates the process and gives you a trust seal
to place on your website.
I recommend that you at least take the 30 day free trial