Wifi Cracking?

Im not here to be like hey tell me how i just would like to know if any one here knows if the netgear wnda3100V2 would work for cracking wifi passwords like wep and wpa? and the second questions does firesheep still work? i have a home network and a network called "Get Your Own Wifi" and i would like to mess with the people who keep connecting to it like post on their facebook "It seems your friend here likes stealing other peoples wifi" just as a little gag. So if some one could answer those questions that would be awesome! Thanks