baz3178 wrote:

The question I have is as follows...

I have a client who has a contact list of around 2800 entries. He has
an older pst file which has around 3500 entries.

What he would like to do is compare both contact lists and show the
list of contacts NOT duplicated in the other contact list so he can
decide whether or not to import them.

Depends on what you mean by "duplicated". Does the entire record have to
match? Is it sufficient for the "File As" to match? What about those
entries where all existing data matches, but one entry contains more data
than the other?
--
Brian Tillman [MVP-Outlook]

Is there any utility or procedure that can do this.

Desperatly seeking help on this.