After going through the Q&A Log for Part 4 of the Labcast, I found that there were no questions other than ones related to doing the Labcast itself or for dial in information.  If you haven't already had a chance to get your hands "dirty" by doing these labs, please do so.  You can always connect to the Virtual Labs environment and do any of the Exchange 2007 labs: http://www.microsoft.com/technet/traincert/virtuallab/exchange.mspx.

Harold Wong
harold.wong@microsoft.com