Are there two sets of Dragon balls?  If not, why did they scatter all over
the universe instead of all over the earth in DragonBall GT?  I am writing
a Ranma/DB cross over and this is a fairly important point for my
plot development.  Thank ya much!

	There are 3 sets of dragon balls.  One set is the one made by
Piccolo's father, the good half.  This set had been upgraded by Dende.

	Another set is made by the late leader of the Nameks.  This is set
had been upgraded by the new leader.  This set is the most powerful.  It
can grant the same wish twice, unlike the set on earth.

	The set in GT is also made by Piccolo's father. This set was made
before he split himself into two different people, good and evil, so it is
twice as powerful as the set on earth.  It grants one wish.  Because of
it's nature, this set has a bit of evil in it.  After wishing, the dragon
balls will spread out all over the universe.  In one year's time the
planet the wish was made will explode.  This is the reason Goku is chasing
after the dragon balls.