I've seen that repeating pattern many times too, and I've been the IT guy as well. IMHO the solution is to serverize and automate the Excel models. See my profi

I've seen that repeating pattern many times too, and I've been the IT guy as well. IMHO the solution is to serverize and automate the Excel models. See my profile for links to my product that does just that, even for sheets with VBA and addins.