|Perhaps you could help people to help you.|
What is this file "hello this"? Is it an executable program. And where does it reside? In the directory "D:\nicol"?
I can only think that the answer to one of these questions is "No", otherwise the advice that you have been given (to use the statement "D:\nicol\hello this.exe") would work. So what is the exact situation, and what is the file supposed to do?