You can get the tool here:
http://ametiste.ifrance.com/wd_stat
You need to rename it in "wd_stat.zip" (I cannot host .zip file). Right mouse button on the link above, save as, "wd_stat.zip".
Installation instruction:
1) Install Python:
http://www.python.org/ftp/python/2.6/python-2.6.msi
2) Extract "wd_stat.zip" you downloaded, then go in the folder "wd_stat" and double click on "httpserver.py" (the firewall may ask to unblock Python, you need to accept, a black window is opened the time the soft is running, it's like a local internet site)
3) In a web browser type the adresse:
http://localhost:8888
Here it is.
Cheers