wireless network setup in XP

Netgear wireless router + Belkin wireless pc card

我有两台PC，一台装的是 windows xp home，一切运作正常。
另一台是 windows xp professional，系统找到该设备，开机时也显示 "there is one or more wireless access points found ..." 但就是连不上。查 control panel/system 显示该设备 disconnected.

请各位高手指点，谢谢