How to Protect Individual Cells in Excel 2003

1. Launch 'Excel 2003' and open the file that contains the individual cell that you want to protect. Click once on the cell that you want to protect. This action will display a border around the cell to indicate that it is selected.
2. Click the 'Format' drop-down menu, and select the 'Cells' option. Select the 'Protection' tab. Click the check box next to the 'Locked' listing.
3. Click the 'Tools' menu and highlight 'Protection' to display a list of available options. Click the 'Protect Sheet' listing, and click 'OK.'