>Does anyone know how to suppress the pop up dialog that reads,
>A program is trying to access e-mail addresses you have stored in outlook. Do you want to allow this? If this is unexpected, it may be a virus and you should choose "No".
>
>This gets triggered at MailItem.Send()

There are a couple of products out there designed to work around this issue. Look for Outlook Redemption or ClickYes.
(Sorry, I don't know the URLs.)

Tamar