No, I don't have Windows in front of me now and I'm using a slightly newer version of Creator than you do but this shouldn't be a problem. Open your project and switch to the "projects" pane where you will find the build settings and build steps. The first build step is the qmake step which you need to adjust by passing a different argument (win32-msvc2008) to the -spec parameter. Then try building the project. If that doesn't work then close Qt Creator, launch "Qt command prompt" for the MSVC-enabled version of Qt and launch Creator from this commandline. Then make sure the Qt versions tab has a "Qt in PATH" entry pointing to your Qt installation and build the project.