wp-rss2.php is jacked up! how can i fix?

From what I understand, with the media RSS plugin, wp-rss2.php is supposed to serve as my media rss FEED. Well, it appears I told the feed somehow to pick up new PAGES as well as posts.

Then when I implemented a contact form, wp-rss2.php picked THAT up, and now it’s fubar. Is there a way I can just erase it and clear it out and start over?

How do I specify what does and doesn’t go into that feed anyway?

Link to the jacked up file

Thanks