Hi Cetin,
> What I do is to to set tabs off and use my own 'page tab' controls (command buttons or treeview - it looks like 'options' in task pane). IOW I don't play with the visibility of pages themselves but the navigator.
I like your ideas of using a treeview control and command buttons as container navigators vs. using page tabs. I like the way pageframe page tabs look under XP, but the more I use pageframe, the more limitations I come across. Another hassle is dealing with more tabs than can comfortably fit in a pageframe's display area. Your idea of a treeview would handle this situation particularly well.
Thank you for your help,
Malcolm