Siebel Architecture Overview

Does anyone know where a copy of an overview of Siebel's architecture can be found? Just something simple to start with...we are starting to implement Siebel here in the next year, and I would like some background on how this works. Siebel themselves have said, "When we implement, you will see," but that is a little too late for me. I have been a network administrator/manager and this is my first foray into the wild world of ERP. Thanks!