How to create a duplicate RSS feed for podcasting

Ok, here is the deal. I have a podcast at http://www.silvys.com/podcast and I want to move it to a new directory called /discast which is the name of the show. Now I know how to move wordpress over. But in order to have iTunes move over to the new feed without changing my podcast id, I need to add a line of code to the rss feed. The feed that I have submitted is http://www.silvys.com/podcast/index.php/feed. I am going to create a dummy page that is in the current directory with the RSS feed that I have submitted to iTunes. So the question is, how do I create the RSS feed so that when linked to the dummy page will show up as “/index.php/feed” just like I have it now, but has the code that I need to put in. Thanks a lot!