Project 2003 Email Form Issues

[Andrew]

When I attempt to open an email sent using project 200
3, it opens using excel, versus the the specialized
project e-mail form. The e-mail is sent when I ask for
project updates, progress info, etc from team members.
I can see the correct info.

Do I have the association incorrect. If so, how do I
correct it?

The attachment uses the MTM extension. And I have
downloaded and correctly installed the workgroup message
handler.

Thanks