The Controls will have the same dimensions regardless of the resolution, at least in pixels.

You can however resize the controls dependin on the resoluton your in by doing:

Code:
control.left = 100 
control.top = 0
control.width = 1000
control.height = 2000
etc.

You can get the screen resoluton in piels by:
Code:
Screen.Width / Screen.TwipsPerPixelX
Screen.Height / Screen.TwipsPerPixelY
Not sure how to detect whether the screen res was changed or not though.

presumably you could multiply the screen resolution by a percentage to make the control always appear a certain percentage of the screen.

Or if you always wanted a control to be a inch long you would set its width equal to: 1440
as the lengths are measured in twips and there are 1440 twis in an inch.

Groovydaz.