I apologize if I'm "Johnny-come-lately" on this one, but I just found the RSV-CE online, which is pretty cool. I've always wanted to be able to use this version in my blog posts and in my conversations and debates with Protestants, but have had to resort to the RSV instead (which is still a lot better than most other bible translations). I don't know if it's legal or not to publish the RSV-CE online, so it may not stay up for very long.
Enjoy it while it lasts!
UPDATE (10/23/10): It appears that the site I originally linked you to is no longer available. Here are two other sites: http://jmom.honlam.org/rsvce/ and EWTN Bible Search.