I bought an EDUP Wireless Adapter off of eBay and the Driver it came with is called Broadcom. That driver does not work. It does not even come with software like Linksys cards do.
Just by looking around online, it seems that quite a few people have bought the same card you did, and are having the same problem. It also seems like they all bought it off of eBay... so it seems it's just a cheap knock off that has been floating around. I would return it if I were you.
Broadcom really sucks man, I had to deal with that on a PC at a job. I reformatted the PC and the friggin card drivers go haywire. I used the same driver, and nothing happened.