Problem with dynamically loading hibernate mappings files

hi.
For the project I'm working on, I need to load a different mappings file for a class based on a parameter passed into the method.
Using hibernate on its won, this is posssible by creating an instance of the Configuration class and calling its loadFile(String fileName) method. However no such way seems to exist when using Spring with hibernate.
Here is my current code.

init code
ctx = new ClassPathXmlApplicationContext("applicationContext .xml");
myDao = (MyDAO) ctx.getBean("MyDAO"); // loads dao bean

This is my current applicationContext.xml
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverM anagerDataSource">
<property name="driverClassName"><value>oracle.jdbc.OracleDr iver</value></property>
<property name="url"><value>jdbc:oracle:thin:@ktnammkt2.fmr. com:1521:ktnad1</value></property>
<property name="username"><value>ktnasndcoe</value></property>
<property name="password"><value>coektnasnd </value></property>
</bean>


<bean id="sessionFactory" class="org.springframework.orm.hibernate.LocalSess ionFactoryBean">
<property name="dataSource"><ref local="dataSource"/></property>
<property name="mappingResources">
<list>
<value>com/fid/itgc/dao/FPCMS.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">net.sf.hibernate.dialect.O racle9Dialect</prop>
</props>
</property>
</bean>


<bean id="transactionManager" class="org.springframework.orm.hibernate.Hibernate TransactionManager">
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>

<bean id="SpringITGCDAO" class="com.fid.itgc.dao.SpringITGCDAO">
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>
</beans>

Would greatly appreciate any help.