Okay I did that and now I feel dumb. It shows up as a blank file so I try to open and "run with Java" and a windows window opens up for a tenth of a second and does nothing at all.
For the past two days I've been trying to download OSBot on this website. For whatever reason whenever I try to download it, it just downloads a copy of the Minecraft .jar named "OSBot". Are you kidding? what is going on?