Well, I actually have two questions in one night. Here is the second one: The last system change I made to Excel was to be able to open files as an Administrator. I managed to do that but I don't know how to reverse this. So why am I concerned? Ever since I did this I have not been able to open the specific file involved with the open-as-admin. After several attempts, I did get an error indicating that the file caused serious errors the last time is was opened. What are my options?