Windows Xp QT4 installation problem

anyone in this forum have an idea what i've done wrong with my QT4 installation in windows xp..

i installed QT4 with built-in MinGW in the C:\QT\ directory after installation i add some environment variable
to the My Computer properties such as(QMAKESPEC = win32-g++ and QTDIR = C:\QT\2010.01\qt ), then i got a red cross in my tools>option in QT Creator IDE, i do it in several times but it fails to compile and build.

heres the screenshot.


plsssssssssss. its very needed that i can compile and build it windows xp.

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any suggestion to this error pls. drop me a line at : drgubuntu@gmail.com