Hi,
In reviewing our records I see that this was resolved via a support call where one of our staff members walked the customer through the steps in our documentation.
Have you followed the published instructions? Did you run into issues while doing so?
http://www.infopathdev.com/blogs/mel_balsamo/archive/2009/03/03/electronic-signature-template-part.aspx
http://www.infopathdev.com/blogs/mel_balsamo/archive/2009/07/31/add-a-repeating-electronic-signature-template-part.aspx
Please let us know and we'll be glad to assist you.