User blog comment:BlankyXP/Free Shipping On All Orders Over $75/@comment-1344907-20120411041417/@comment-1344907-20120411164435

Not really. I'm pretty sure you just put mods wherever you put your other downloads. You have to download a new version of the mod whenever the game gets a new patch, though. You can read up more about it here. It's a very convenient thing to have. :o