>However, I can only use the x,y coordinates of the form of it's development size. How can I make full use of the form's x,y coordinates in the maximumized mode. Is there a variable that the form multiplies by to do the maximumize operation?

I don't understand, unless you are hardcoding in the Forms initial Width and Hieght or Top and Left values. Instead use the properties. If this isn't it, can you post a little code? Anyting helps/