Microsoft Access, although much requested by users, it definitely NOT the ideal database to use for web applications. To make matters worse, the JDBC/ODBC bridge is not considered thread safe. If, due to application requirements, you must use Microsoft Access as your back end database, it is highly recommended that you at purchase a license for a more industrial strength JDBC/ODBC bridge such as that sold by EasySoft .
Configuration File:
<context name="default">
<description>MS Access Database</description>
<hasSetupTables>true</hasSetupTables>
<jdbc driver="sun.jdbc.odbc.JdbcOdbcDriver" url="jdbc:odbc:Expresso" connectFormat="1" login="" password="" cache="yes" escapeHandler="com.jcorporate.expresso.core.db.DoubleQuoteEscapeHandler"/>
<images>%context%/%expresso-dir%/images</images>
<startJobHandler>n</startJobHandler>
<showStackTrace>y</showStackTrace>
<mailDebug>n</mailDebug>
</context>
To Install, run DBCreate, and UNCHECK the "Verify Created Tables" option as shown in the picture below:

Click Run, and your Microsoft Access database should be created for you.