Hi Robin.
>I want to resize the height of ny form dependant on the height that's available on the current screen resolution.
>
>On a machine that has Windows 7 I want to reduce the height of my form by the height of the Task bar (if it's visible).
Take a look at
http://doughennig.blogspot.ca/2010/02/multiple-monitor-class.html. Although the class discussed was designed to work with multiple monitors, it works just fine with one and handles the Taskbar height.
Doug