error while building qt project

Hi everyone,
Now i install qt-4.7.1 in my laptop(xp sp2,32 bit).But when i am trying to bulit i am getting an error like :: error: [debug/main.o] Error 1
In compile output i am getting :

Code:

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'C:\DOCUME~1\BISWA' is not recognized as an internal or external command,
 
operable program or batch file.
 
The system cannot find the path specified.
 
mingw32-make[1]: *** [debug/main.o] Error 1
 
mingw32-make: *** [debug] Error 2
 
The process "C:/Qt/2010.05/mingw/bin/mingw32-make.exe" exited with code %2.
Error while building project untitled (target: Desktop)
When executing build step 'Make'

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How can i solve this one ?

Did you run qmake prior to building the project?

yes. I also tried from qt command prompt.