Exporting an EndNote Library

This seems like an obvious question but I can’t seem to figure out the answer on my own.  I have a library of 1,000+ documents that I would like to export to another individual. This library contains many (almost 700) pdf documents. I know that I have to send this other individual both the .txt file and the DATA file so that this individual will have both the reference data and the pdfs, and I know how to use Export to create either a text or a rich text file document, but I cannot locate the DATA file in which the pdfs are located.  How do I do that?

jack9608

Thanks! My version is X5).