I copied the file networkx
It is not a simple file, it is a folder with many files. You must place the entire unzipped networkx folder in C:\Program Files\Quantum GIS Lisboa\apps\Python27\Lib\site-packages (because it is a simple module)
In general, to use a Python module, you must first install it:
python setup.py install
As on Windows, QGIS uses its own version of Python (not in the Windows's registry), without a Python shell, you can:
- use the bootstrapped installer for setuptools of Nathan's QGIS Blog, which will install directly the module into a folder rather than looking in the registry
- download the networkx version of Christoph Gohlke at Unofficial Windows Binaries for Python Extension Packages, unzip it (it is a .exe file but you can directly unzip it) and place the resulting folder in C:\Program Files\Quantum GIS Lisboa\apps\Python27\Lib\site-packages.
After that, in the Python console of QGIS:
'C:\Program Files\Quantum GIS Lisboa\apps\Python27\Lib\site-packages\networkx\__init__.pyc'
'C:\Program Files\Quantum GIS Lisboa\apps\Python27\Lib\site-packages\networkx-1.7-py2.7.egg\networkx\__init__.pyc'
depending on how you installed the module