@Leandro: Sun (usually) doesn't fix a passing score for beta exams. I think it is determined based on the performance of those who give the beta exam. So you may not know if you've passed the exam until a few weeks after the beta cycle ends.
@Vyas: The registration doesn't open until October 13. And it closes on the 15th. You can register either by calling Prometric, or on Prometric's website:
http://www.prometric.com/Sun/default.htm [ October 01, 2008: Message edited by: Vijay K Narayanan ]