Even though I’ve upgraded to Qt v4.6.1 when I try and evoke ‘make’ I get “‘make” is not recognized as an internal or external command.  I added to my path the [root]:\Qt\2010.01\qt\bin directory but make.exe wasn’t in there.  (My install directory being [system root]:\Qt)

Well, for Windows I found it in the  [root]:\Qt\2010.01\mingw\bin directory.  The make executable is actually mingw32-make.exe in this directory.  Add this to your Path and use mingw32-make and you should be good to go.