另外,如何让网卡在没有连线的时候不要在状态栏显示有交叉的图标? 
1. Use Registry Editor (Regedt32.exe) to view the following key in the registry: 
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters 
Add the following registry value: 
Value Name: DisableDHCPMediaSense 
Data Type: REG_DWORD -Boolean 
Value Data Range: 0, 1 (False, True) Default: 0 (False) 
Description: This parameter controls DHCP Media Sense behavior. If you set this value data to 1, DHCP, and even non-DHCP, clients ignore Media Sense events from the interface. By default, Media Sense events trigger the DHCP client to take an action, such as attempting to obtain a lease (when a connect event occurs), or invalidating the interface and routes (when a disconnect event occurs). 
2. Restart your computer. 
( 
http://support.microsoft.com/default.aspx?scid=kb;en-us;239924 ) 
以上转载自雨声论坛。