1) See http://www.outlookcode.com/d/formcontrols.htm#listcombo
2) Two methods -- enter a validation formula and prompt on the control's Validation tab in its Properties dialog or write code behind the form's Item_Write event handler.
3) 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.
FYI, there is a newsgroup specifically for Outlook forms issues "down the hall" at microsoft.public.outlook.program_forms or, via web interface, at http://www.microsoft.com/office/community/en-us/default.mspx?dg=microsoft.public
.outlook.program_forms

Signature
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I am updating a contact form and have a few questions
> 1. How do I create a Dropdown List and add the values?
[quoted text clipped - 4 lines]
>
> Thank you.