[Plugin: Contact Form Manager] How do I change the form submission confirmation message

I’m trying to figure out how to redirect the person who fills out my form to a printable coupon.

The easiest way I can think of is to edit the confirmation message to include a link that takes them to a separate page making it easier for them to print.

Is there a way to change that message?

Thanks!

http://wordpress.org/extend/plugins/contact-form-manager/