Try this:
8.To get ICS (Internet Connection Sharing) working properly:
HKLM\Comm\InternetSharing
Delete this string: Extension - IcsHelper.dll
No need to soft reset. Open up Internet Connection Sharing and you should be on your way. I've been doing it this way since I got my 800w 3-4 months ago.
It was found in this thread here:
http://forum.ppcgeeks.com/showthread.php?t=41241
Oh, and a search should have revealed several threads for this...