one rss feed for wordpress posts, comments, and gallery2 new albums

Hello – I have looked for and used/experimented with plugins and tried hacking code to get one rss feed for my blog but haven’t been successful to date. I have wordpress 2.2.1 and gallery2 and would like one rss feed that shows new comments, new albums, and new postings (vs. separate feeds for each). Any recommendations on the easiest way to do this? THANK YOU!