Installing Scripts?

Hi,

How would I go about using and installing the following Script?

http://www.macouno.com/2010/03/17/caliper/

How would I actually use the Script in Blender?

Thank you.

Download the .py script and put it in your scripts folder. The location of the scripts folder depend on the operating system you are using. Note that toy use this script you’ll have to be using blender 2.49b. Any current versions and this will not work.
http://wiki.blender.org/index.php/Doc:Manual/Extensions/Python/Scripts_guidelines
http://wiki.blender.org/index.php/Extensions:2.4/Py/Scripts/CAD/Caliper

Is there a download link for 2.49b ?

http://download.blender.org/release/Blender2.49b/