CMS How do show CMS and forum rss together
 

Hi, I have certain question regarding RSS feed of CMS..

1. How can I show all CMS article in single RSS feed (be it from any section i.e want to show feed from all section)
2. How do I show forum feed and full cms feed together as single feed ?
3.Similarly, if can do above then also how to show forum feed alone !

Thank you!