Problem with WindowState property

Question

Hi all, i'm new in VS2010 c#. I've got a menu form with a property isMdiContainer = True , this one call three children forms(options in the menu), each one with the WindowState property = Maximized.
When i run the solution,the menu form run ok but the first form not run maximized, if i resize the menu form, the inner form maximize it, or, when i run a second form, this appear maximized.
Thx in advance.