How To Redirect an RSS Feed to Another Location
---->
RewriteEngine on
Options +FollowSymlinks
RewriteBase /
RewriteRule ^oldfeed.xml$ http://www.coolexample.com/?
feed=new_rss_location [R=301,L]
<----
In addition you will need to either delete or rename the old XML feed.
For more information about mod_rewrite and .htaccess files please see the Apache Web site.
Carey