How to configure DODS_HOME

I'm trying to run barracudadiscrack withthe java files generated with Dods.
Well, I had some problems to compile the whole stuff and others more to run.
Now, I get this problem: It seems that the method
org.enhydra.xml.XMLConfig.newXMLConfigInstance
can't locate DODS_HOME. When I load the app into Tomcat,
this method write the message "JVM don't know abotu DOS_HOME
neither ENHYDRA_HOME."
Reading the source of this class, I can see that the cause of this is that
it can't read the DODS_HOME enviroment variable with the method getenv().
I work with Windows NT and have DODS_HOME both in the user and
in the administration enviroment. Also, in my web.xml file I have:
    <env-entry>
        <env-entry-name>DODS_HOME</env-entry-name>
        <env-entry-value>D:\Dods5.1</env-entry-value>
        <env-entry-type>java.lang.String</env-entry-type>
    </env-entry>
What must I do to feed the DODS_HOME variable into the
application?

This is part of my log file:

2003-11-13 17:07:27 StandardContext[/BarracudaDiscRack]: Servlet 
/BarracudaDiscRack threw load() exception
javax.servlet.ServletException: Servlet.init() for servlet 
ApplicationGateway threw exception
    at 
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:963)
    at 
org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:823)
    at 
org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3420)
....
----- Root Cause -----
java.lang.ExceptionInInitializerError
    at 
com.lutris.appserver.server.sql.StandardDatabaseManager.loadLogicalDatabase(Unknown 
Source)
    at 
com.lutris.appserver.server.sql.StandardDatabaseManager.<init>(Unknown 
Source)
    at 
com.lutris.appserver.server.StandardApplication.createDatabaseManager(Unknown 
Source)
    at com.lutris.appserver.server.StandardApplication.startup(Unknown 
Source)
    at 
org.enhydra.barracuda.discRack.DiscRackGateway.setUpEnhydraApplication(DiscRackGateway.java:141)
    at 
org.enhydra.barracuda.discRack.DiscRackGateway.initializeLocal(DiscRackGateway.java:99)
    at 
org.enhydra.barracuda.core.event.ApplicationGateway.init(ApplicationGateway.java:903)
    at javax.servlet.GenericServlet.init(GenericServlet.java:256)
    at 
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:935)
...
Caused by: java.lang.NullPointerException
    at org.enhydra.xml.XMLConfig.newXMLConfigInstance(Unknown Source)
    at org.enhydra.dods.Common.init(Unknown Source)
    at org.enhydra.dods.Common.<clinit>(Unknown Source)
    ... 48 more

Any help will be greatly appreciated.
Thanks in advance and best regards,
Juan R. Migoya
SPAIN