well, I can see I'm not getting any replies but maybe I can start here.

I went in to the data files for Outlook and I noticed that the files that I think should be the .pst files do not show the extension name but every data file that has a .pst extension also has a .tmp extension following it.

Can I assume that the data files that do not show the extension name are the actual .pst files and that the .pst.tmp files are just temporary backup files that Outlook is constantly creating for itself?

If I make copies of the data files that do not show the extension names, am I safe to manipulate my folders with the knowledge that all of my data is backed up and safe?