sorry i cant really explain it, but i think this would explain it better than my self explaining, but this is the getting started with the 2013 control system, click the link to go directly to the download page. at page 78 it talks about how to install labview for FRC 2013. here is the link
http://wpilib.screenstepslive.com/s/3120/m/8559/pdf
if you need more assistance, Private Message me! i will be happy to help!
(i was new to this myself and had to figure it all out by myself, so i know how difficult it may be to be just starting out)