You will need to buy the commercial version of Qt, or find a place to download the MSVC project for it, usually denoted by .vcproj or .sln. After that it is not difficult to set up.
This is no longer true.

I don't like the idea of changing QMAKE_LFLAGS for static linking. If you compile statically it should no longer be needed, Qt/QMake should take care of it by itself.

I would also reconsider using the %QTDIR% variable. If someone has Qt3 installed, it already has QTDIR defined and pointing to the Qt3 installation dir.