Update String Table Dynamically

I need to dynamically update a string table in an MFC VC++ project. I searched for a solution to this question, and found a very surly answer which said to use UpdateResource() with no instructions. Visual Studio 12 help comes up with no documents when I search for UpdateResource.

In particular, I want the IDR_MAINFRAME string which appears in the title bar of an SDI window to reflect the actual name of the executable, even if I change the name of the executable after if has been created.