Um, I don't know if this is actually useful for anything or not, but if you ever need a ROT-13 Translator, there's one here. I used it to translate a solution I found online for Crimson Room.
I'm not sure where ROT-13 comes from, but I think it's a UNIX thing.
(ROT-13, BTW, just is the 13 letter from the letter you actually want)