Thank you very much Heikki, Jose and everyone else who coached me through the GN set-up. Finally today I managed to connect the webend with the postgresql database by using the gast-script (gast.sh). I am sure that my troubles are only beginning now, but I think the painful setup process should be over now.
Regards,
Jan
ubuntu 9.10
geonetwork 2.4.3
postgresql 8.4
tomcat6