Hi Vasanth,
We haven't tried that control. If you found one that you could wrap into an ActiveX control, then you could add it to the view and interact with it as any other custom control (which is difficult, but doable). A couple other options are a) use the taskpane, and b) do some tricky view side display to make a repeating table look like a tree. We've done both of these approaches for projects. For best performance, I'd use the taskpane, or just make the section scrollable in the view. The view is slightly easier to work with in the form (since you don't need to write a lot of code to transfer data from the taskpane).
Good luck!
Patrick Halstead
Project Manager at Qdabra