Thanks Wysota:
Sincerely, I dont understand you. Make install?, where ?
(mingw32-make install does nothing ... )

Thanks somnathbanik .
All this comes from to try have a QTCreator compiled with mingw.
I have used qt-creator-2.0.1-src.zip (downloaded from QT )
I have unziped it at d:\qtcreator:
I have execute this :
qmake
mingw32-make release
I have got the exe file and some dll's at d:\Qtcreator\bin.
I have copied it to my original qt\bin path.
And ... qtcreator does not run (The dll error explained before)
Sincerely I have searched and searched and searched on the web but I dont find nothing about build a Qtcreator using mingw. I'm thinking that there is any hidden problems and this is the reason because I dont find nothing at QT Official web page...
Can you Help me ?