Click this link to download it.
Unzip it to your desktop.
Go into the hosts folder on your desktop and right-click and choose "copy" on the HOSTS file inside the folder.
Now, open windows explorer. You can get there, by right-clicking your start button and going to "explore".
Navigate to this folder:
Go into the ETC folder, right-click an open space and choose paste, when it asks if you want to replace the HOSTS click YES.
That's it. This will prevent you from being directed to the known bad sites.