I don't have specific instructions, but here is an overview of what you need
Install Qt: either through a macro, homebrew, source or a binary assembly .
Install sip from source
python configure.py --arch=x86_64 make && make install
Install PyQt4 from source . You need a mac source. Not X11 (linux)
python configure.py make && make install
PyQt4 should find sip and your Qt installation.
You cannot just install it from easy_install, because it is a bit more active. PyQt depends on SIP and Qt setup for communication. I recommend homebrew on top of macports to install the package. You can use it to get Qt: brew install qt
source share