How to completely remove Python from a Windows machine?

 I installed both Python 2.7 and Python 2.6.5. I don't know what went wrong, but nothing related to Python seems to work any more. e.g. "setup.py install" for certain packages don't recognize the "install" parameter and other odd phenomena...

I would like to completely remove Python from my system.

I tried running the 2.7 and 2.6 MSI files and choosing remove Python and then running only 2.6 and reinstalling it. Still, stuff doesn't work.

How do I completely remove Python - from everything? (!)

I would not like to reinstall my entire machine just because of the Python install...