Modifying project to get the error

1. settings.py and manage.py are only in project directories (proj1 and
proj2)
2. Both import a global settings file from a third directory
3. I create a VirtualEnv as our interpeter, I named it TwoRoots, I
installed it using "virtualenv TwoRoots", then "TwoRoots/bin/activate"
then I installed django 1.3.1 on it
4. I choose the VirtualEnv as the project interpeter and I select the
correct settings.py and manage.py in the django support (I point them
to proj1)
I get AttributeError: 'Settings' object has no attribute 'SITE_ID'