Q:

Specifying Notepad as OLE object

For word application, we have Word.Application as program identifier. What is the program identifier for Notepad and Calculator?

A:

Word.Application is the name of the a COM object which forms part of the Word API.
Notepad is a simple application which does not have a COM API. If you just wish to start an instance of notepad, then locate the notepad.exe file in %WINDIR% or %WINDIR%\System32 (for W2k8), and start it as a new process from your application.
The same applies for calc.exe.

