Hi Debra
Extract hsql.jar out of the hsql.zip you downloaded and copy that into the Orion/lib directory
<data-source
name="Default data-source"
class="com.evermind.sql.ConnectionDataSource"
location="jdbc/DefaultDS"
pooled-location="jdbc/DefaultPooledDS"
xa-location="jdbc/xa/DefaultXADS"
ejb-location="jdbc/DefaultEJBDS"
* url="jdbc:HypersonicSQL:defaultdb"
connection-driver="org.hsql.jdbcDriver"
* username="sa"
* password=""
schema="database-schemas/hypersonic.xml"
/>
Differences in the hypersonic entry in my data-sources.xml are marked with an asterisk above. Default database name is "defaultdb", default user and password are "sa" and "".