Welcome to the sourceforge.net page for metacity-setup.
About the program
metacity-setup is a program for configuring the metacity window manager.
This program has been retired
There are many more metacity options than this program covers, and metacity is nicely integrated with Gnome. You should investigate the gnome-control-panel, or gconf-editor (I believe that is the best way).
You can contact Ian Wienand about the program, he was the Debian maintainer but has taken over for the time being.