Minimizing multiple (modal) forms...

I'm trying to have my entire App. "disappear" when the user minimizes the top most opened window.

Imagine this scenario:

frmOne.frm opens frmTwo.frm (modally) which opens frmThree.frm (also modally).

If the user minimizes frmThree, I want frmTwo and frmOne to minimize also. Further, I want there to be only one "item" in the taskbar which if clicked, restores the three forms correctly (that is, frmThree on top of frmTwo which is in turn on top of frmOne)

Obviously frmTwo and frmThree are not MDI child forms.

For those who know this app., Jackie Franck's Audio Grabber exhibits this functionality.

Thanks to anyone who can point me in the right direction!