I just bought an AirPort Express for the house and there are 3 computers here. 1 Mac and two PCs (a laptop and a desktop). The Mac works fine, the laptop PC works fine but the desktop PC will not connect to the AirPort Express. It's not an issue of range because I put the laptop right next to the desktop and it shows the condition as Excellent. I've reinstalled the network card drivers and restarted, still nothing. Any suggestions?