To get the Mercurial Forest Extension: hg clone http://www.terminus.org/hg/hgforest hgforest Then I copy hgforest/forest.py to the hgext directory of my Mercurial intallation area, and add this to your ~/.hgrc file: [extensions] hgext.forest = But you can put forest.py anywhere you want, as long as the [extensions] refers to that location. -kto