alright, i got mine working with the i610 plugin i think, if that is the right name. it was last night, i can't remember. my roommate got blackdown too and he has mozilla 1.0.1 i think or something like that and i made sure he followed the same instructions as me, but he still doesn't have the plugin.
i used the one i used because other people seemed to use it. i couldn't figure out with any amount of reading which to use.