How Could I do this?

can i make a script to do the task i explain? pls help me.
Whenever i open a *.ppt file, a copy of that is saved somewhre in computer, without my notice. that is i cannot see any clue that my file has been copied. pls dont misunderstand. its for a education purpuse.Pls help me. I am not trying to steel someothers valuable data.

Although I'm unable to understand what exactly you're trying to achieve with NSIS, I'm sure none said that you're trying to steal someothers valuable data.