> I'm looking for some sort of tutorial that uses rxml instead of rhtml
> files for the views. I googled a bit and looked at the official Ruby on
> Rails site but I can't seem to find information about this topic.

See http://ap.rubyonrails.com/classes/ActionView/Base.html under 
Builder.
--
David Heinemeier Hansson,
http://www.basecamphq.com/   -- Web-based Project Management
http://www.rubyonrails.org/  -- Web-application framework for Ruby
http://www.loudthinking.com/ -- Broadcasting Brain