Hi Andrew
On my Windows 7 computer, I don't see the tick box under the "Advanced" button.  I see it under Control Panel | Display | Set Custom Text Size (DPI).  It's to the left of the OK and Cancel buttons.  But it's totally greyed out (and checked off).  I couldn't untick it if I wanted to.  Yet Adagio looks fine on my screen.
Is there somewhere else I need to go to be able to untick the box if I wanted to?
Steve