There are a couple of different ways to get up and running with a copy of Twisted-Goodies:
svn co --username guest --password guest svn://foss.eepatents.com/foss/projects/Twisted-Goodies/trunk Twisted-Goodies
The current source code ("trunk") will appear in the "Twisted-Goodies" subdirectory. You can go there and install with
sudo python setup.py install
Note that anonymous svn checkout won't work; you need to use the 'guest' account with its 'guest' password due to an SVN bug.
You can download one of the following files and use it to install Twisted-Goodies, either by executing them (for Windows ".exe" files) or extracting their archived files and using the setup.py script.