I have an application that is written in VB6. In a number of places it either creates or updates an Excel spreadsheet. Everything was working just fine until IT upgraded the users from MS Office 2007 to MS Office 2013. Now it doesn't work. Is there a place where I can see what code needs to be changed to use MS Office 2013? I am assuming the logic that gets the data, etc. will not change, only the code that creates or updates the spreadsheet.