MS has released the preparation kit for Windows Embedded Standard 2009 MCTS exam: go to
http://msdn.microsoft.com/en-us/embedded/dd439483.aspx and get it! It's a very useful tool both for the exam and to approch the subject. MS released also a similar kit for Windows Embedded CE MCTS (http://msdn.microsoft.com/en-us/embedded/cc294468.aspx)