Problems adding a second splitter to MainFrame.

[Pothead]

Over the last week I've been trying to add a second splitter to mainframe (the first being the existing transfer view). Needless to say, nothing i've tried has actually worked, and i am starting to get really annoyed with ATL \ WTL.
The first splitter looks like it's created so simply, which makes this all the more annoying, since i've tried all sorts of different things from google and the Code Project, none of which i can get to work.

(I would like the second splitter to be below the toolbars, and just take a few centimetres off the normal work place window, m_hWndMDIClient ?, but i cannot even get the second splitter to appear, never mind placing / populating it)