hibernate jdbc drivers question

[Martin Gainty]

I have a quick question with hibernate hsqldb drivers

     [java] 11:58:23,125  INFO SchemaExport:177 - exporting generated schema to
database
     [java] 11:58:23,125 ERROR SchemaExport:200 - schema export unsuccessful
     [java] java.sql.SQLException: No suitable driver
     [java]     at java.sql.DriverManager.getConnection(Unknown Source)

Which hsqldb (presumably jdbc) drivers does Hibernate support???

Thanks,
Martin-