Configuring Your Card:
SUSE: http://en.opensuse.org/Using_Xgl_on_SUSE_Linux
Fedora: http://fedoraxgl.tuxfamily.org/index.php?title=Installation_en
Ubuntu: http://ubuntuforums.org/showthread.php?t=148351
Gento: http://gentoo-wiki.com/HOWTO_XGL
Mandriva: http://forum.mandrivaclub.com/viewtopic.php?t=47071&highlight=xgl
Other systems: http://wiki.compiz.net

Places to find out more:
Compiz Blog: http://compiz.blogspot.com
Compiz Forums http://copmiz.net
Compiz Wiki http://wiki.compiz.net
Gentoo Wiki: http://gentoo-wiki.com/Compiz

For The Future
MiniWin: http://www.compiz.net/topic-2197-looking-for-miniwin-testers
Copacity Plugin – http://www.compiz.net/topic-1644-copacity-plugin
Agora Project Forum: http://agora.underdev.org/index.php
Kiba-Dock: http://www.compiz.net/topic-2867-kiba-dock-part

Enjoy,
Jonathan (Who)