Please see this post before installing.
sudo apt-get install openbox obconf obmenu gmrun synapse docky nitrogen tint2 xcompgmr thunar thunar-thumbnailers thunar-archive-plugin thunar-media-tags-plugin
cp openbox/. ~/.config/openbox/
cp tint2/tint2rc ~/.config/tint2/
cp pytyle2/config.ini ~/.config/pytyle2/config.ini
cp -R themes ~/.themes
I love Openbox, and I hope you'll have a lot of fun!