Nevermind, its super easy. You just root the phone, then go get Titanium backup for free from the app store. Then, you just Go to settings>Wifi and internet> USB tethering and turn it on with the little checkbox. But the phone has to be plugged into the PC with your USB cable FIRST or this won't work. Then windows will automatically detect it and start using it. But I went ahead and disabled my regular dsl network adapter, just to be safe and be sure that I was using the samsung galaxy S as my modem and internet connection. This is the easiest I've ever seen this done.