Does anyone know a solution that allows Versamail to open a forwarded message by another treo's versamail?

In Versamail when you received a forwarded message from a treo versamail user, the message (the original mail) comes in as an attachment. When you try to open it, it either give your error message or said "unable to find a viewer, would you like to view as a text"

My second question is why forwarded emails come in as attachments in Versamail?