i received a dell latitude D610 and installed the operating system and the drivers, when i open the network adapters in device manager it says i have the Broadcom NetXtreme 57xx gigabit controller. when i try to connect to the internet with a cable it works fine but it wont let me detect wireless networks or if i unplug the cable an error pops up saying A network cable is unplugged i dont know if i have the right driver(s) installed.