Thank you very much for your response. Since you had an entry that showed 5.14 version of PERL, I upgraded to the latest version from 5.12 to 5.16. Thank you for that. I am working on testing a number of responses from this forum. All in all I have not been successful. On a positive note I just found another way that my script does not work. (aka Thomas Edison)

The results you showed is a true merge however, what I am looking for is to show only the entries that that match in both CSV files.

Thanks again philiprbrenan.

TheCanadian