InfoPath Dev

Hello everyone, I have an info path form that includes various digital signatures, I was hoping to take the user's name information from the digital signatures once they are signed and copy those into a column.... any ideas how I can achieve this?

 thank you thank you thank you   i was going nuts

 Hey everyone, I made a error when design my form template. I accidently clicked the "Enable protection check box" in the form options and now the "Design this form" option is no longer availalbe. How do i unenable this so I can make changes to my form? this is in infopath designer 2007 btw    thanks