Stop being a wuss and just try it. If you keep telling yourself "I can't do this, I can't do that" then, well, you can't - and you never will until you get over it and try. We are talking about changing the strings (something you must be able to do already, I hope) and adjusting the saddles for height and intonation. There are tons of links and examples around the net for doing this. Try that, see if you even like either of these tunings, then worry about tweaking the nut permanantly or adjusting the neck releif (unless you are comfortable with doing that now, but it sounds like you are not).