Talk:Deploy an Application on Windows
Also, keep in mind, that during development process, you may want to add this line to your at very beggining of program (just after main() ):
QCoreApplication::addLibraryPath("./");
This will save you trouble of trying other computers or changing QT directory to anything else ( ex.C:\Qt\ to C:\QtHidden\ ) and will make the code work for machines of other people who use QT creator.