I need to Digitally sign business documents. I have figured out to digitally sign the documents. What I want to do is in the signature line I want the signature to be a digital stamp like what adobe does when you digitally sign a PDF. If you know what I am talking about and can instruct me on how to make this happen I would greatly appreciate it.

Basically I just what the signature stamp to be like miniature pic of the digital certificate again like adobe does when you inject a digital signature in a document.