Splitwindow for my application

Hi,

I want to develop one MDI application .It shoud have split windows like below.
==============
| | |
| | 2 |
| 1| |
| | |
|============= |
| 3 |
==============|

(See the attachement,here its not coming properly)
In this the '1 ' is for tree control, '2' is for main display
and '3' for logging infromation.

So i developed in MDI and in Mainframe::OnCreateClient() i creted this split windows.
But i canot get the child window attached to this '2' main display.

There is lot of child windows in my application which i can navigate by using Tree control in left or using menu bar of application.

So pls kndly give sopme sample or tips how to attach the every child window in Main dsipaly pane.
I tried different things,created 3 views (TreeView,BottomView,MainView) but it doesnt come.and i tried creating 2 views and one Main dsiplay as Framewnd.But nothing happened.

How can i get that? Just i want this
In Mainframe,Left slit window is for tree control list,Bottom split window is for showing some logs and right big pane is for all child windows(GaphView,AlarmView,GroupView...etc)