How do i make this one work, i've downloaded HeartRanger and im trying to make the Silverfish.dll to work. But i ain't even getting it in the dropdown list, nothing there at all. I do check the Use extern A.I. module button and nothing shows in dropdown. 
I can see silverfish.dll in HearthRanger -> ExternBot -> Silverfish directory. 
Im total novice to this, i guess i need to "install" silverfish or someting, but how?
Help..