11:22:21.02 C:\> vcvarsall amd64
Setting environment for using Microsoft Visual Studio 2010 x64 tools.

11:22:32.31 C:\> pip install pymongo
Downloading/unpacking pymongo
  Downloading pymongo-2.2.1.tar.gz (230Kb): 230Kb downloaded
  Running setup.py egg_info for package pymongo

Installing collected packages: pymongo
  Running setup.py install for pymongo
    building 'bson._cbson' extension
    Unable to find vcvarsall.bat
    building 'pymongo._cmessage' extension
    Unable to find vcvarsall.bat
    C:\build\pymongo\setup.py:183: UserWarning:
    ********************************************************************
    WARNING: The bson._cbson extension module could not
    be compiled. No C extensions are essential for PyMongo to run,
    although they do result in significant speed improvements.

    If you are seeing this message on Linux you probably need to
    install GCC and/or the Python development package for your
    version of Python.

    Debian and Ubuntu users should issue the following command:

        $ sudo apt-get install build-essential python-dev

    RedHat, CentOS, and Fedora users should issue the following command:

        $ sudo yum install gcc python-devel

    Above is the ouput showing how the compilation failed.
    ********************************************************************

      "Above is the ouput "
    C:\build\pymongo\setup.py:183: UserWarning:
    ********************************************************************
    WARNING: The pymongo._cmessage extension module could not
    be compiled. No C extensions are essential for PyMongo to run,
    although they do result in significant speed improvements.

    If you are seeing this message on Linux you probably need to
    install GCC and/or the Python development package for your
    version of Python.

    Debian and Ubuntu users should issue the following command:

        $ sudo apt-get install build-essential python-dev

    RedHat, CentOS, and Fedora users should issue the following command:

        $ sudo yum install gcc python-devel

    Above is the ouput showing how the compilation failed.
    ********************************************************************

      "Above is the ouput "

Successfully installed pymongo
Cleaning up...

11:22:52.21 C:\> pip --version
pip 1.1 from c:\python27\lib\site-packages\pip-1.1-py2.7.egg (python 2.7)

11:32:33.03 C:\> python --version
Python 2.7.3

11:32:49.35 C:\>