Last week I took this exam and passed with a score of 98. For preparation I used the following training material.
Course 8912: Customization and Configuration in Microsoft Dynamics CRM 4.0 and Working with Microsoft Dynamics CRM 4.0 (Microsoft Press).
I felt the course 8912 training material is more than enough for passing the exam.
(Chapter 11: Introduction to Advanced Customizations :- There weren’t any questions from this chapter it’s just there for our own understanding).