System: Running Outlook from Office XP on Windows 2000.

When I go to a new email message and click the "To" to bring up the
address book, there are several duplicates of the same contact listed.
These do not occur in the regular contacts folder.

The default email address book is set to be the same as the outlook
contacts folder.

If I delete the one in the contacts folder both of them dissapear from
the email address book.

Anybody have any idea what is going on?

Many Thanks,

S