Hi-
Did you try installing PyQt4? The error message that you are getting points you to the uber_subject.py help section on installing PyQt4 on different systems, as it said above:
PyQt4 must be installed to run the uber_subject.py GUI
--> see the output of: uber_subject.py -help_install
In those help instructions, it has you set PYTHONPATH to a particular location, namely '/usr/local/lib/python2.7/site-packages', and from your afni_system_check.py it doesn't look like it is set correctly (it is set to a different location, on in your /sw/ tree, which I guess means one installed with fink).
It looks like your terminal is tcsh, so if you copy+paste the following:
echo "" >> ~/.cshrc
echo "setenv PYTHONPATH /usr/local/lib/python2.7/site-packages" >> ~/.cshrc
echo "" >> ~/.cshrc
source ~/.cshrc
... can you open uber_subject.py then?
-pt