>Actually this is a cross between completely dynamic Tree and the one that shows in the default case. It is more no. of level based. To illustrate I have copied actual text from the view I just have:
To accomodate that need, as close as it could be, I would suggest you drop the minimum number of messages before the treeview goes dynamic to its minimum, which is 50 messages. Thus, most of the times, you will always be in that mode.