Hard to know what you did wrong since we don't know what you did.
Sounds like you forgot to configure the Outlook Address Book after this
"transfer" or that you may have more than one Contacts Folder.
http://support.microsoft.com/default.aspx?scid=kb;en-us;287563&Product=ol2002

Signature
Russ Valentine
[MVP-Outlook]
>I recently succeeded in transferring my .pst from OL 2000 to OL 2003, and
> everything seemed to be working fine. But I just added two new contacts
> and
> they show up in Contacts but not in Address Book, although all my old ones
> are there.
GreatDane - 13 Sep 2005 22:35 GMT
Hi again, Russ. You helped me get rid of my duplicate Personal Folders a
couple of weeks ago, so everything was presumably set up correctly at that
point.
I checked everything the article suggested, and everything looks correct.
Outlook Address Book looks like it's configured correctly, and I only have
one Contacts folder. All of my contacts show up in Address Book, except for
the two new ones I added yesterday. They both have email addresses, and I
can't see any difference between the way they are set up and the way the
other ones are.