Hi, the above information was very use full to me.I did a project where i need to generate a excel file. I used spreadsheet::WriteExcel, I am able to see complete data in the output file in Excel2002 version. Where as the client had MSExcel2007 for him, he was getting an error 'data lost'. And he is not able to see the complete data. After reading this I found that I should use Win32::OLE. I will go for this. I had a bad experience with the Microsoft products. No compatibility between different versions.