I am using WIN XP Professional and Outlook 2003

I am referring to the form in CONTACTS.  Recently I went to Tools, Forms,
Design Form.  I added a new Field "Department" under "Company" field and
Published this as "my form".
I then go to Navigator Pane, right click on Contact Folder, Properties and
selected "my form" in "when posting to this folder use" box.

Now when I try to create a new contact I get the form with the change I made
("department" is there).  So far so good.

How can I now get the existing contacts to reflect this change.  Does the
change only apply to new contacts and how could I apply it to existing
contacts.

Thanks