Problem in Creating/installing Custom Widget

All,

I have been trying to install a Custom Widget.
My environment is as follows

OS: Windows Vista
QT4.5

Navigating in Qt Creator to Tools->Form Editor->About QT designed plugins,
I can see that it located my plugin at:
c:\Qt\2009.03\bin\designer\customwidgetplugin.dll, but it failed to load it, due to a library incompatibility:

"The plugin uses incompatible Qt library. Expected build key "Windows msvc relase full-config",
to "Windows mingw release full-config".

The link here also explains the same problem
http://www.qt-apps.org/knowledgebase...D=rwtnvbxqqffh
http://labs.trolltech.com/forums/topic/697
http://labs.trolltech.com/forums/topic/1068

The suggestion provided is - to recompile the QT Creator source with MinGW.
Is this the only option available?

If so can some one point me to a documentation thaty explains how to recompile the QT Creator source with MinGW.