If the file is now Personal Folders(1).pst. This would seem to suggest that
Personal Folders.pst currently exists. I would start by going to File > Open
Outlook Data file. A FileOpen window will appear to which you will need to
browse to where the Personal Folders.pst file is located. If you don't know
where this is just do a Search for it. Add it into your Folders list and
transfer all your email across to it from your Personal Folders(1).pst. Then
just close the pst file after you have moved all files across. If you have
no further use for this file just delete it. If you cannot find your
Personal Folders.pst file and you had nothing in it previously, choose a
location during the FileOpen window and simply type the name you wish to use.
A new pst file will be created using this name you have just created whether
it be Personal Folders or Blue Monkey.pst
