According to this URL ( http://www.google.com/support/news_pub/bin/answer.py?hl=en&answer=40394 ) google don't accept RSS feed.
Me also want some best answer from webmaster is this possible for webmaster to submit RSS feed to Google News..
Make sure your website fits the technical requirements of Google News e.g. make sure you have a unique string of three numbers in each article URL which doesn't begin with 200 or 199.
You can simply add your RSS feed to the Google webmaster tools and it will be automatically used by the Google News (if your site is approved to be a part of its network).
You can simply add your RSS feed to the Google webmaster tools . why peoples are saying it,s impossible .
It's good to know that Google consider a site a news site if it is updated multiple times a week (more better, a day) by multiple authors. So, you can find a journalist community who have a big enough resource where they put all their news and which Google rank enough high to index them for his own news aggregator.