Thanks AbstractVB for first half of decision. Now I can add
on the Form not only intrinsic Controls with the help of Licenses collection.

Licenses.Add "MSMAPI".MapiSession"

But it works only when ToolBox has reference on OCX.
I am developing Add-Ins and I need to add referencies to the ToolBox
programmatically. What function or collection allows to do this?
Boris
http://pguide2000.narod.ru