These pages should help:
http://www.outlookcode.com/d/forms.htm
http://www.outlookcode.com/d/contactform.htm
http://www.outlookcode.com/d/newdefaultform.htm

Signature
Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I would like to add custom fields to store the types of vehicles a customer
> buys. and add these fields to the main contacts form. and Apply these
[quoted text clipped - 3 lines]
> I don't know how to change the layout and apply it to other existing
> contacts.