Walk forward towards the glowing portal. (To your right you can see 
all kinds of computer equipment.) Look down on the ground before you. 
This is your first puzzle and the key to unlock the portal.

Etched in the ground is a circle, crowned by five pictured markings. 
Refer to each marking with a number from one through five, from left 
to right. Each time you place the spinning top on one of the markings,
it will trace a path and light a star at the end. You must learn the 
correct order to keep all the stars lit as some paths will cross and 
reverse the process. Once all five paths are traveled, the five stars
will create a pentagram signifying the body. Begin with the fourth 
marking (picture of the right foot). Determine the correct order until
all five stars are lit. When the puzzle has been correctly solved, the
portal will activate and your character will automatically step through.