how to display opened forms in windows tool bar menu?

I am developing a project using C# and SQL server. it is windows application.
In my project there so many buttons. and at the top of my parent project i have horizontal menu. i have a menu strip that is window.
i want to show all forms that i have opened will be listed under the name "window". just veritically listed.
just like a windows in the VS 2008, it has window... then the latest you opened any form.. it appears under it.
hope you understand me.. with my poor english. thanks any solutions?

Are we talking about an MDI application because, if so, that functionality is already built into the MenuStrip? In that case, just assign your Window menu item to the MenuStrip's MdiWindowListItem property.