Dell :: Mini 910 Inspiron Wireless Connection Via Windows XP

the computer was using a different program to manage the wireless connection. Even though it said it was connected, my internet didn't work. Not knowing anything about this new program, I removed it and tried to connect with the Windows wireless manager. It didn't acknowledge any of the wireless connections around, just a computer-to-computer connection. I took it to a friend's apartment to use their computer and internet to search for options and it still didn't recognize any networks around, now not even the computer-to-computer connection. It now tells me "No wireless networks were found in range. Make sure the wireless switch on your computer is on...." The Mini doesn't have a "switch," but I read where F2 can turn it on...however, pressing Fn-F2 is not working for me, either.