Ctrl+drag the contacts to copy them. To make them show the new form, you
need to change the MessageClass on the existing items to point to your new
form's class. See http://www.outlookcode.com/d/newdefaultform.htm#convert
for several tools and scripts to accomplish this.

Signature
Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I have created a new contact folder and designed a form, containing new
> fields, which I would like to use for my clients details. How can I copy
> my
> existing contact details into the new folder and have them appear using
> the
> new form?