Installing pyminc should be trivial. Get it here:
(pyminc used to be located on launchpad, https://launchpad.net/pyminc, but to keep in line with the move of MINC related code to Github, pyminc has been moved over as well)
(Latest version at the time of creating this wiki page is 0.2)
Then untar it, and run 'python setup.py install' with an optional --prefix if you want to install it in a non-default location.
Pyminc requires numpy (the python numerical arrays package) to work. Also, it needs MINC2 compiled as a shared object and accessible through the standard search paths.