Python not finding modules

[mc0710]

Hey!
I installed a few python modules through the freebsd ports, but
when I try to import them in the interpreter it says "module xxx not
found". This seems to happen for some modules and not for the others.
ex:- I installed psyco and parallel python which seem to be found but
then scipy, PIL aren't being imported. Below is my $PYTHONPATH

['', '/usr/local/lib/python2.5/site-packages/setuptools-0.6c7-
py2.5.egg', '/usr/local/lib/python25.zip', '/usr/local/lib/python2.5',
'/usr/local/lib/python2.5/plat-freebsd6', '/usr/local/lib/python2.5/
lib-tk', '/usr/local/lib/python2.5/lib-dynload', '/usr/local/lib/
python2.5/site-packages', '/usr/local/lib/python2.5/site-packages/
gtk-2.0', '/usr/local/lib/vtk/python', '/usr/local/lib/python2.5/site-
packages']

The scipy libs are located at "/usr/local/lib/python2.4/site-packages/
scipy" so I manually added this path to the PYTHONPATH but it still
doesn't seem to find it.

Can someone please help me out here?

ps Also does including a directory in PYTHONPATH include all of it's
sub-directories too?