>What I am trying to do is this:
>
>I have a container, Cnt1, on which I dropped another
>smaller container, Cnt2.
>
>When the user moves the mouse over cnt2, I want to call a
>method on Cnt1, as in:
>
>This.Parent._HotTrack()
>
>
>Since this is a developer's control, I dont want my user's, other
>developers, to be able to see the method _HotTrack().
>
>This HAS to be possible, I just don't know how. Any ideas?

Since cnt2 or any other object can't call the hidden methods of cnt1, but it can call visible methods, you'd have to create a visible method in cnt1 which would in turn call this._hottrack:

* cnt1.DoHotTrack:
this._HotTrack

Then from cnt2 you can call

This.parent.DoHotTrack