Hi Bob !
Well, I experience difficulties with the new QtSDK bundle. If your want to compile without errors or warnings, you need the previous package of Qt : ftp://ftp.qt.nokia.com/qtsdk/qt-sdk-win-opensource-2010.05.exe
I also use QtCreator (instead of Microsoft Visual Studio), it’s easier and you have nothing to configure. And it’s included in Qt package.
Hope it will help you !