If you will check the sites for those exams, there are no MOC classes so far. Any material you can use will be publicly available documents, you can find on microsoft.com
http://www.microsoft.com/learning/en/us/exam.aspx?id=70-321#tab3
http://www.microsoft.com/learning/en/us/exam.aspx?id=70-323#tab3
Marek Chmel, WBI Systems (MCTS, MCITP, MCT, CCNA)
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