I'm willing to explore knoledge in Business Component.since i didnt appear for (SCJP)Prerequisites elgibilty to do SCBCD, i've found SCEA can be appearable without any Prerequisites .Even though SCEA has 3 steps, it 'll take me as higher leve in my career .
SCEA required almost all knowledge from Java, and it requires you understand J2EE infrastructure. Even it does not require SCJP, it is difficult to finish it if you don't have a sound knowledge on Servlets, JSPs, EJBs, etc.
If you are an experienced system developer, you might be fine. Otherwise, better do it step by step.