Create a new folder called "Emacs" on your C: Drive and extract emacs-24.5-bin-i686-mingw32.zip to it. No install necessary.
Type "%appdata%" in the windows explorer bar.
If there is an ".emacs.d" folder, delete it.
Extract the contents of the Scrivener Emacs config zip above to the ".emacs.d" folder in this folder. The folder location will be something like "C:\Users\bob\AppData\Roaming.emacs.d", where your name replaces bob.
Run Emacs with C:\Emacs\bin\Runemacs.exe. Create shortcuts as desired.