Okey, i'm gonna make an a** of myself here and just ask cause i've searched, but didn't find anything (I suck at searching

). Okies - sooo - how do I actually attach this to a model? When I follow the instructions above the download link I end up replacing the "attachment" with the unit that was suppose to wear the "attachment".
I know - I stink at this, epic fail

Anyone care to help?