I have a spreadsheet with a column of formulas that sums up a series of cells to the right of the column. The problem is that someone is changing those values. I tries protecting the cells/worksheet, but I then found out that there is an unprotect xla file that is floating around the office that must have been used to unprotect my sheet, and screw it up again. I'm guessing that whoever is doing this isn't noticing that the math is being done for him or her, because the number entered is always just about the average cell more than what it should be.
How can I disable keyboard input, or allow input that doesn't "stick", to specific rows, columns, and cells?