I followed these steps:
http://wiki.maemo.org/MADDE/QtCreato...on_for_windows

But they may be well out of date now because that wiki page was written when pr1.2 wasnt even out, and maybe the QtCreator team sorted out all the issues, and made a nice official, stable QtCreator that integrates easily with MADDE

(Does anyone know if QtC/MADDE things have changed?)