[Distutils] Two versions of SQLAlchemy side-by-side?

We have SQLAlchemy 0.3.3 installed via setuptools. I upgraded to 0.4.5 today but had to back that out (by editing easy-install.pth) because of API changes. Now I have these two installs .../site-packages/SQLAlchemy-0.3.3-py2.4.egg .../site-packages/SQLAlchemy-0.4.5-py2.4.egg Is there a way to import the 0.4.5 version for testing without disturbing the 0.3.3 version? I tried placing the 0.4.5 egg directory in PYTHONPATH but I still get the 0.3.3 version when I "import sqlalchemy". What's a fella to do? Thanks, Skip