Just the cable from the shifter to the transmission? Have you checked a repair manual, like Chiltons or Haynes? It's a simple job, but typing up a step by step will take forever.
That is pretty much the worst part of it, taking out the shifter. Underneath just pop the cable off the ball and remove the 13mm nut from the bracket.
Alan
The only adjustment is at the slider bracket on the side of the transmission. It usually all just falls into place, but if you're not accessing all gears via the shifter, you'll need to make your adjustment there.