Here's a link to a really detailed overview of how to prepare for the Sun Certified Enterprise Architect (SCEA) exam. I just picked it up while perusing JavaLobby.
I'm also going over the new Java 1.4 stuff since I've avoided it until now. My brain is being crushed under the weight of all this new technology.
Later... While I'm at it, here's a link to a Learning Guide to the GoF's Design Patterns.