I had written a step-by-painful-step guide to editing the config files using (gadzooks) a terminal. As you can see, Rapache is way betterer. It has buttons you can press and everything.
Already it has proved useful, as I'd like to have mod rewrite enabled for clean URLs in Joomla!, and it's a snip to check the box in the modules panel (although I'm having teething problems with the app wobbling when I do this!!).
Trebles all round!