I have troubles with my internet line, and wanted to verify the package I downloaded. I tried to click on your :
"Tip: You can check if the file you downloaded is exactly the same as the one we have here downloading this tool.", which is located just under the Windows client downloading lines, in the download page of the site planeshift.it.
This leads to a 404 page, and no tool to check the md5 sum is available here.