Appears to be an interface for selecting three constellations in some certain order.
It seems to go through the constellations. It starts at Aries and if you click on the right button, follows this order.
There are also thirteen symbols unevenly spaced on the outside of the ring. One for each of the constellations plus Ophiuchus (the thirteenth zodiac)?
One combination that works is 8. Scorpio, 7. Libra, 5. Leo.
After they have been entered, a sequence of lights and sounds are shown using the points of the Leo constellation. The sequence must then be repeated. If failed four times you are retuned to GID.DIR. When competed you are taken to http://arg.exoriare.com/lunar.php, http://arg.exoriare.com/endmessage.php and then IN.CMNG.