I have order forms that I fill out for customers and have them sign and either fax or give back to me. I purchased a Surface Pro with Office 2010 and Acrobat Pro installed and want to be able to fill out the forms on the tablet, have my customer sign it, and save the signature in the document. Do I need an app to accomplish this? If so, does anyone know what works best? Is this something that the Surface Pro provides out of the box? Thanks for any help you can provide.