Using a combination of my own intellect and the Microsoft "Learning Tools" online section (I'll trust anything before Microsoft), I've tried everything available to make an object usable after protecting an Excel 2000 spreadsheet, but I keep getting the "The cell or chart you are trying to change is read-only yada yada..." error. In this case, the object is a checkbox, and checking the box will enter an amount into a linked cell. The linked cell itself is unprotected. I've tried unprotecting the checkbox, and that hasn't worked; I've unchecked the "Object" box while protecting the sheet itself, and that hasn't worked either. As it stands, a protected sheet will not allow a user to check or uncheck boxes, and therefore my sheet is useless. What can I try next? Will anything else work?