That's how I would do it: first create a definitions file ('definitions.h') and declare some values
Now create an .*rc resource file and declare the menu inside it
#define MY_FILE_OPEN 10
#define MY_FILE_CLOSE 11
As you can see the menuitems have an id previously declared in the definitions file. It isn't necessary to declare the definitions (you can do something like 'MENUITEM "&Open",10'), but using definitions will help you to not confusing.
Now add both files to your project and compile it. There shoudn't be any problem.