Porting Qt project from 3.3 to 4.5

Hi
I have a zip of Qt 3.3 project and now I have installed qt 4.5 with new Qt creator. I tried to open the project with new qt creator, but it did not convert the 3.3 project to 4.5 project.

And then I referred to Qt docs and tried with the tool "qt3to4 myproject.pro", but still I'm not able to port it.:o

Can anyone plz tell me the steps for porting a qt 3.3 project to qt 4.5 project ?

Thank you.

you have to take one class at a time approach. first make a list of all the qt classes that the qt3.3 application is using..
then filter out those qt classes which have changed in qt4. then apply the relevent code changes