Using SW_SHOWMAXIMIZED with MDI view

I am trying to migrate from a SDI environment to a multiple view/single document environment using code supplied to this site by Pat Laplante. I would like the main view to be maximized without a border (like a single SDI CView) and the other view (a treeview) to have a border and be displayed normal. When I use SW_SHOWMAXIMIZED with the main view, the other view does not display at all. Am I doing something stupid or is it a fundamental problem with MDI? I would appreciate your help. Thanks.