I have a lot of old PST files, some of which are backups and some that I have created because of the size limitation in Outlook 2007. I am upgrading to Outlook 2010 so size dosn't matter. I want to "merge" all of these PST files. I'm thinking that I could bring them all into one file and then run a duplicate killer? Does anyone have a better idea? And what software would you recommend for this? Thanks in advance.

Bill