Download a static executable of Intervor from http://cgal.inria.fr/abs/Intervor/
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Uncompress and install the executable:
tar -xvf /tmp/intervor-static-64.tgz sudo mv intervor-static-64.exe /usr/local/bin/intervor
(adapt to the version you downloaded, important is that the executable is called intervor).
Test your Intervor/Biskit installation:
cd biskit/Biskit/Dock python Intervor.py
Note: The wrapper is currently lagging behind the more recent intervor version. See bug: https://sourceforge.net/tracker/?func=detail&aid=3025128&group_id=150896&atid=779191
intervor -f pdbfile -p -C AB -C C -D .
...analyses the voronoi interface between chains AB and chain C. See intervor --help for more information.