There is only one stable version at at any given time, but it's compiled differently for each camera model and
firmware version. Which means that you need to figure out what version of firmware is in your camera.
I'd suggest you take look at the first couple of sections of this wiki page :
Prepare your SD cardI'd also suggest using either the
STICK or
CHIMP utilities linked at the top of that page to do all the difficult setup work for you.
Edit : which FAQ did you look at? Link please? There are many FAQ's out there and rhe quality and accuracy varies alot. We try to fix them up as people report problems.
Update : link fixed