unattended install of binary python packages (modules) for windows
You can download the source code of pywin32 at sourceforge.net/projects/pywin32/files/ and then build it as MSI file yourself. Therefore you need setuptools (only for building). Use the command "setup.py bdist_msi" to create a MSI installer in the "dist" directory.
The same procedure should work for all Windows-compatible packages.
Current easy_install can install the pre-build ".exe" installers silently, i.e.;
C:\Python27\Scripts\easy_install.exe pywin32-220.win32-py2.7.exewill install pywin32.
This also enables possibility to remove using pip;
pip uninstall pywin32 -yuninstalls pywin32
As said in a linked answer you can succeed with using easy_install if the installer was created with distutils.