I have an XML file that is validated by DTD A. Now I want to transform this XML file to another format which is valid to another DTD, say DTD B. I know that I have to use XSLT and map one element from DTD A to the element of DTD B. But this is actually a very long process (sorry for being lazy =D), is there a way in making it easier or an application that deals with this problem? thanks.