INSTALL
emerge -av1 compiz compiz-bcop libcompizconfig compiz-fusion-plugins-main compiz-fusion-plugins-unsupported compiz-fusion-plugins-extra compiz-plugins-screensaver compiz-fusion-plugins-wallpaper  compizconfig-backend-kconfig compizconfig-python compizconfig-backend-gconf ccsm fusion-icon emerald emerald-themes compiz-fusion


BACKUP
quickpkg compiz compiz-bcop libcompizconfig compiz-fusion-plugins-main compiz-fusion-plugins-unsupported compiz-fusion-plugins-extra compiz-plugins-screensaver compiz-fusion-plugins-wallpaper  compizconfig-backend-kconfig compizconfig-python compizconfig-backend-gconf ccsm fusion-icon emerald emerald-themes compiz-fusion

RESTORE BACKUP
emerge -av1 --usepkgonly compiz compiz-bcop libcompizconfig compiz-fusion-plugins-main compiz-fusion-plugins-unsupported compiz-fusion-plugins-extra compiz-plugins-screensaver compiz-fusion-plugins-wallpaper  compizconfig-backend-kconfig compizconfig-python compizconfig-backend-gconf ccsm fusion-icon emerald emerald-themes compiz-fusion

for the quickpkg to work
make sure to create in make.conf and that the dir exist
PKGDIR="/usr/portage/packages"