Actually, you don't need any certification, according to this:
Sun Java Technology Certification What you do need, is a understanding of the entire J2EE platform, of UML, of design
patterns - of how they are, their strengths and weaknesses, and when to chose one over the other - and generally a good understanding of software design problems and solutions.
The keyword here is
understanding - cramming (which you could do before the SCJP exam - I did) won't help you on this one. It's a reason why Sun has placed it at the top of the Java certificates, as the only "Advanced" one)
[ October 04, 2006: Message edited by: �dne Brunborg ]