I have no immediate plans to work on making koha MARC compliant, but having MARC importers, and exporters would be cool.
If we can achieve this, I don't see how the internal data storage would matter much....
I think there are MARC routines out there, possibly even in perl.
Question: has anyone sat down and sorted out how close Koha's existing records are to MARC output (or Z39.50, for that matter)?
If you're going to do Z39.50, let me recommend the YAZ (http://www.indexdata.dk/yaz/) toolkit. We use it at the New Zealand Digital Library and are very happy with it. It has a perl interface called: Net::Z3950 stuart -- stuart yeates <s.yeates@cs.waikato.ac.nz> aka `loam' "To err is human--but it feels divine." -- Mae West X-no-archive:yes