Answering my own question....... it can be done using the sign object in code if running client or in a webservice however this requires full trust. My enviroment would not allow full trust (don't ask me why) so i came up with using a button that would set the date picker to today and then conditonally showing a section with another section in it that had the signature. Then I set that signature to sign the datepicker. This made it so that if you click digitally sign it put today in the datepicker showed the sign option and then when signed locked the date. Then I just cleared the datepicker if the signature was blank on form submit. Thanks info path for making this a wheezzzzzzzzzzzzzzzz.
P.S. I am looking for infomation on chaning the display of the signature. This solution puts a lot of wspace at the head of the signature........ The display options on the section don't do it.
Sr. Prg and Recently Created SP Architect VIOPS.