Unprotect 2003 excel files when opening in Excel 2007

[Mayumdwl]

I opened an Excel file created in Excel 2003 version in Excel 2007 the cells
were protected and asking for a password to change, which I never locked with
a password. can some one guide me how to modify the sheet.

 

[PJFry]

On the ribbon, go to Review and then Unprotect Sheet.

Here is a great resource for using commands from a 2003 template and the
corresponding 2007 template for Excel.
http://office.microsoft.com/en-us/help/HA101491511033.aspx