I don't know

I have no ide what am doing with this script. I tryed alot of scripts like this one but I think this is the best one if I only can make it work!
Nothing works, I meen nothing works how so I install this script plz tell me in the easiest way possible. Am not a noob on combuters just a noob at this asp scripts.
You can see the webex here on this link

http://fastighetsjouren.com/wexlite/

password is: gulanka

Check the requirements page and make sure you have all the specified requirements: 

IIS/PWS 
Microsoft Windows Script 5.1+ (here) 
Microsoft Data Access Components (MDAC) 2.5+ (here) 
No 3rd party components are required