Filling a database with some test data

I think I've got a decent understanding of Spring security now and would like to test that everything works. I need to figure out a way to put up a new database when running Jetty and put some rows into a user table. I am using hsqldb for the few small persistence tests I've written so far. I thought I would also use hsqldb for manually testing my application when it runs in Jetty. The Java EE-book I've read mentioned that you can use DbUnit to import data into a database from an XML file. But I think the main problem at the moment is that I have an inadequate understanding of hsqldb, so I'll have to start by learning more about that.