Trouble saving to the emacs file dir under Windows

[Davin Pearson]

This post is slightly off topic but I am stuck and I see no way around it.

I am trying to get write access to the Emacs file dir under the MS Windows 
operating system.

Here is the output of the chmod command:

c:\Program Files (x86)\emacs-24.5\share\info>chmod 666 dir
chmod: changing permissions of 'dir': Permission denied

What gives?  How do I go about getting write access to the file "dir"?