For a more visual demo of DPM2010 and Exchange 2010, check
http://edge.technet.com/Media/DPM-2010-How-to-protect-and-recover-Exchange/.
Also take a look at
http://www.microsoft.com/systemcenter/en/us/data-protection-manager/dpm-protect-exchange.aspx for more information on protecting Exchange with DPM. Also check out the video at
http://edge.technet.com/Media/DPM-2007-how-to-do-individual-item-restore-for-Exchange/ which is a demo for item-level recovery using DPM2007SP1 and Exchange 2007. Note the remark: "While DPM 2007 natively protects Exchange Storage Groups, and restores both SG's and DB's -- it does not directly restore mailboxes or individual items. For granluar recovery, we leverage the Recovery Storage Group (RSG), as prescribed by the Exchange product team. Direct individual item restore is not supported by Exchange (KB 904845) without using the Recovery Storage Group (RSG). "
