[Zope] Can ZPT form call a url?

[James O'Keefe]

On our website we have a form where by a person can subscribe to our
announcements list.  It is the standard mailman form. 

We would like to expand on that form such that a user can enter their email
address and zip code which we would log to our database and then call the url to
subscribe the person in the mailman list.

Is there a way to do this?

Thanks!

Jamie