How to Merge PST files in Outlook 2010

How to merge PST files in Outlook 2010? Many of the users want to merge their Outlook files as Outlook 2010 supports large size PST files and due to this reason user want to merge their PST files for better access of data. This software can also remove duplicates and can also exclude deleted items when merge numerous PST files in Outlook 2010, 2007, 2003 or any other version of Outlook as well.