I am on 4.0.1 jailbroken iPhone 4 and I have the newest iTunes 10.0.1 installed. I've tethered my iPhone before to my Macbook just fine and everything runs smoothly. However, I am trying it now with my girlfriends Mac and it's not working. It's not even showing up under networks to connect to. She has the latest version of iTunes 10.0.1 and I know your suppose to open up iTunes so it can see the iPhone. I have my phone plugged in and everything and nothing is happening. Has anyone had this problem and know what to do? Thank you guys in advance for the help. PS - I am using the commcenter hack method and it's never given me any problems except this.