Type: cvs -d :pserver:anoncvs@cvs.cairographics.org:/cvs/cairo co cairo
Then: cd cairo
Then: ./autogen.sh --prefix=/usr
Then: make
Then: make install
#(enter in your user password)

Now you need to install the clearlooks-cairo engine from gnome.org cvs:
 cvs -z3 -q -d:pserver:anonymous@anoncvs.gnome.org:/cvs/gnome co gtk-engines
Then: cd gtk-engines
Then: ./autogen.sh --prefix=/usr
Then: make
Then: sudo make install
#(enter in your user password)