Qt 4.8.0 installation (Windos Xp 32 and MSVC 2008)

i am installing with the following command
configure -debug-and-release -opensource -shared -no-qt3support -qt-sql-sqlite -no-webkit -no-script -platform win32-msvc2008
i installed strawberry perl first.
i get the following error

Could not find mkspecs for your QMAKESPECS((win32-msvc) aftre trying:
C:\qt4.8.0\mkspecsError processing project file C:\qt4.8.0\projects.pro

should i hack the pro file? i think the problem is in the -platform option : win32-msvc (as suggested by Qt site) did not work, so i was forced to add 2008 ...

isee that mkspecs is trying QMAKESPECS((win32-msvc) while it should be QMAKESPECS((win32-msvc2008)
i am surprised how poorly documented is the qt instanllation process in the qt web page

thanks much for your help