Happy to tell I passed the 70-502 exam this morning. 968 Points! Woohoo. Thanks goes out to Chris Anderson and Adam Nathan for their books. The exam covered quite a lot of areas though i find it was focused the most on Databinding. (Normal Binding, ElementBinding and RelativeBinding) and the hierachy of Dependency properties. Could’ve been my questions though. Now time to eat cake! 
Congrats! Did you follow the Microsoft MCTS Exam Prep guide? I am working through the prep guide with the hope of covering th exam requirements.
Cheers,
indyfromoz
Prepguide is just what you need. I printed it out and went through it step by step. Are you reading through some books or are you browsing the MSDN?
I am ordered and am working my way through the Microsoft Press Book on the MCTS WPF exam. So far so good, if all goes well I would attempt the exam in about 6 weeks. Before the MSPress book, I rigorously worked through Pro WPF in C# 2008, then started working two real-world WPF applications. I use Adam Smith’s book and also refer to Chris Andersons’ book. I am building a collection of MSDN articles as I work through the preparation guide.
Cheers,
indyfromoz