I have a linksys wireless usb adapter and its not workin on my desktop what do i have to do or download?

the model no. is usb200m ver.2 (aka 2.0) and it is made by linksys the first time i put it in the usb drive, it opened something but it closed and it never popped up again the other times i've plugged it in. I was wondering what I have to do to get it installed and working, or what I would have to download (online-freeware wise).