it seems to me like you will need to calculate the height of the shape. So something like
if shape1.top = 8000 and (shape1.top - shape1.height) = 6000 then
msgbox "yup"
end if
But remember, it might be shape1.top + shape1.height, depending on how you are looking at it, because the screen starts 0,0 at the very top left and then gets bigger going down and to the right. Here is a program's source that I wrote for a friend of mine that lets him put the mouse in a given point on the screen, and while it's in that given area, it disables the screen saver