I am having the same problema as you. In fact I did not manage to make it work after following these instruction (despite the good job that OzQTNoob did). You will find this same info under this thread http://www.qtcentre.org/threads/4715...32-bit-machine.
In my case I edit "qtenv2.bat", but as I told you it did not work for me. Try yourself and let me know if you manage to fix the problem.