No need to be bossy here, we're all ready to help when you snap your fingers.

Well, after checking out that script from your link, this is what you should do:
1. Download
their zip file and extract it somewhere. Upload the two script files inside to anywhere you want on your server. Take note of the location, as you will need it later on.
2. On
their page , there's a text box with the code you need to insert. Copy and paste all of that code into the "header insert" section in your style template. Make sure that you change the source attribs. for the scripts, so that they can be found.

For example, in the script tag, change this: SRC="ssm.js" to this: SRC="http://www.yoursite.com/jsfiles/ssm.js" . Got it? Good!
