Hi Shg,

Thank you so much for the responce.That is OK.But my requirement is by using excel macro i need to encode the workbook contents and after Decode the contents of the excel workbook contents...after encoding other users should be able to read the contents (Encoded contents).But should not be able to understand the contrents...If the user or other user After entering the Decode password the user should be able read/Modify the originala content of the workbooks..