I have searched and search, and cannot find this menu for the life of me. If anyone knows where to go to get there, please let me know...
This is an article on what I am trying to do http://blogs.msdn.com/b/vsnetsetup/archive/2012/10/16/setup-exe-is-not-a-valid-win32-application.aspx
The dialog shown in the article is part of the standard project property pages for C++ projects. It should appear when you right-click on a C++ project and select properties.