Hi Toni.

Here is the situation... I have to send email using Outlook 2003. The user has several email accounts registered but only one profile. Is there any way to control which email address is used to send the email?

Why do you have to use Outlook? If you could use CDO for Windows 2000 and latrer, this is a piece of cake. You can even set the sender;s e-mail address to be Daffy@duck.com if you want to.
And CDO does not rely on the e-mail client installed on the local machine. All you need is access to an SMTP server.