Setup Python
To install python 2.4 it is the easiest to install this package
http://pythonmac.org/packages/py24-fat/
(If you installed another version than this one you may have to setup the correct path to the framework in ADMIN/mkpicture.sh )
pyobjc
Further you need to install the pyobjc 1.4 framework:
http://pyobjc.sourceforge.net/software/