How to get windows 7 to pickup wireless signals?

I am trying to get my Network Card : Broadcom BCM4309 802.11a/b/g to work on my windows 7 computer. I went to this site to get the drivers and stuff for it. They seem to be working and it appears in my network connections as a wireless adapter with the green bars and a small red x next to it. So it’s picking the signals up, but for some strange reason windows 7 won’t read them. I even installed this program called xitrus wifi inspector and it told me that i had a bunch of wireless networks including the one I am trying to connect to. I try to connect to it through this program and it just tells me that windows can’t find any networks. This is really frustrating me. Yes the hardware and software are working correctly. Windows can’t find anything wrong with it. So why is windows telling me lies? Thank you for your help!