Rudy moved in tonight.
The challenge. Get tethering running. The result – success.
0) first show it does not work on my phone – Internet sharing message “remote party has ended this connection”.
1) Rudy showed his phone (HTC on Sprint running windows mobile 6.1) worked on my Windows 7 machine – without any windows alterations.
2) modify Connections -> AT&T ISP Access to wap.cingular from isp.cingular. As outlined in http://networkjew.com/2009/02/09/howto-unlock-blackjack-ii-tethering-windows-mobile/
3) Start “Internet sharing”, select USB and then “connect”.