What I really meant was that Protistants (Not just Jahova Witness') don't consider just being Catholic "Enough".
And really, now that I know more about their faith, I can see how they believe that.
Well, Paul (in Romans or maybe one of the letters)boiled down what is needed for salvation to (roughly) "Jesus was the son of God. He did sinless as a sacrifice for your sins. Ask for Him to save you and He will."
After that, it's gravy.
(He also wrote a bunch on how to put up with stupid theological snit fits --- be nice to them.)
Instead of making a decision about Catholicism based on a thread on FR why don't you actually read the Cathechism? Get your answers straight from the source you wish to learn about. The Cathechism gives incredible amounts of detail for the things we believe.