>Have you done anything with the Event Notification and/or UI Integration? I've been working on adding a callback application in VFP and adding a menu item in QuickBooks that calls the VFP app. There are few samples in VFP but I have figured out how to get some of it to work at least on my local computer. Do you know much about the Event Notification and UI Integration?

Sorry, no. All of my experience has been with pushing data into QB.