The GATOS homepage is located at:
        http://www.core.binghamton.edu/~insomnia/gatos/

GATOS has moved to http://gatos.sourceforge.net/
but orig.tar.gz are only available at 
http://www.core.binghamton.edu/~insomnia/gatos/src/

As this works good for me, I used those packages
that require neither special XFree86 drivers nor kernel modules.