Just about all of our cataloging is done through the OCLC CatME software program. I just now exported 15 MARC records from OCLC CatME into a file called mar142003.dat (see attached) and then ran them through a Perl script called marcmanip.pl (see attached) and MARC::Lint. The marcmanip.pl script should simply extract the control number along with data from about 6 of the MARC tags, if those tags are present.