Hello, I am working with Koha for our library, and I love it so far, but I am sure I will have many questions in the future. I have successfully converted my UNIMARC records into MARC21 records to load into a test Koha database (except for the diacritics!), but my current catalog cannot export the holdings records along with the bibliographic records in MARC format as you have directed. (I've already asked the creators of the catalog and they say they can't do it. Another reason to go with open source!) Things would be much easier for me if I could control the primary key (biblio.biblionumber) for the migration into Koha. Then it can be assigned automatically. I've looked to see if this has been answered before, and I couldn't find it. Thanks, James Weinheimer <mailto:j.weinheimer@aur.edu> j.weinheimer@aur.edu Director of Library and Information Services The American University of Rome via Pietro Roselli, 4 00153 Rome, Italy voice- 011 39 06 58330919 ext. 327 fax-011 39 06 58330992