You will be drilling up or down through the bottom plate of the stud wall. You will need to cut out where the cable will come through the wall so you will need to use a stud finder to make sure you are within a stud bay. If you are going to use the existing cable you'll need a hole that will allow the end of the cable to pass through or you can run a new cable and terminate your own cable connectors (you'll need cable tools for this). I would use a device ring like this one...
http://www.google.com/imgres?imgurl...brUM6IHanf0gH1zYCoDQ&ved=0CFQQ9QEwBQ&dur=1182
http://www.google.com/imgres?imgurl...brUM6IHanf0gH1zYCoDQ&ved=0CFQQ9QEwBQ&dur=1182