[Zope] HOW: Attach spreadsheet in zope app?

I've created an application that allow a salesperson to enter sales information for a perspective customer. When the salespersons 'saves' the information an email is sent to our financial analyst. He then goes into the application views the information then does some financial analysis in excel. I would then to create a button for the analyst called 'Attach Analysis Results' that would browse the pc and allow the anlayst to attach the spreadsheet. The user would later log on and have a button called 'View Analysis Results'. That would allow them to view the spreadsheet. What is the best way to do this? I have the Zope Bible but could not find a good example. Thanks. Mike