I am just about to set up an accelerometer to an Arduino, but read this on the Sparkfun website;
"You will need some extra hardware to convert this analog signal to a usable digital one."
I searched the forum about this but couldnt find anything. Do I need to do anything else besides just plugging the accelerometer into the analog in pins?
Nope, you don't need anything else if you're using the arduino analog pins for the accelerometer. if you were using the digital input pins, you would have to convert the analog output of the accelerometer to a digital output using something like an ADC chip.