I've installed FF and figured out how to download individual filters, now my problem is how to download/install those free packs. I know how to install normal plugins but I'm assuming these are different than that

(Yeah, I tried pasting it into the plugins folder under photoshop, and I even tried to extract it using Stuffit lol)
I'm assuming using the free pack has something to do with actually opening FF, but I can't figure out how.
BTW I know my away around PS to say the least, so no worries on oversimplifying the instructions.