1. Open Excel 2003. Click the 'File' menu and select 'Open'. Locate the spreadsheet with the extra rows and double-click its file name.
2. Press and hold down the 'Ctrl' key on the keyboard. Click once on each row number, in the leftmost column, to delete.
3. Right-click any of the highlighted rows. Select 'Delete Row'. The rows are deleted and the rest of the spreadsheet bumps up to replace those rows.