After I installed iTunes 7.6 I cannot get my Vista machine to enable Internet Connection sharing on an AdHoc Wireless network, so that I can get my iPod online. Normally after I go to Network and Sharing center, and then click "Set up a connection or network" and the make a new Adhoc network, and type the name and the WEP key, then on the next screen it would let me click "Enable internet connection sharing on this connection." But now that button is gone! I have tried restarting, and it still isn't there. The only thing that has changed is the new itunes.