Running Tomcat+Struts w/o internet connection

[James Howe]

We are trying to run Tomcat + Struts to run our web application without an 
external internet connection.  We are running into a problem because our 
struts-config.xml has an external reference to the struts-config DTD.  What 
is the proper way to modify struts-config.xml to reference a locally 
defined DTD and where would that file normally reside in a standard Tomcat 
installation?

Thanks.