About Internet Connection Sharing (ICS)…

針對 "網際網路連線共用"選項消失(區域連線 > 內容 > 進階 > 網際網路連線共用)，或是"家用網路"選項消失 (區域連線 > 內容 > 進階 > 網際網路連線共用 > 家用網路)，似乎是系統中的網路卡資訊過雜亂所導致，至底下的位置清空不必要的網卡，重開機即可。

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Network\{4D36E972-E325-11CE-BFC1-08002BE10318}]
@="網路介面卡"
"Class"="Net"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Network\SharedAccessConnection]
"EnableControl"=dword:00000001

1. A PC Must connect another PC by the "1394 Net Adapter".
2. Window XP considers the "1394 Net Adapter" not a Ethernet adapter, that is to say, in the properties of LAN > advanced, may not show ICS relating setting.